Riot Intel

There is an ongoing thread over at ARFCOM discussing the ongoing riots and the people and their methods. You are gonna chuckle at some of this but in my opinion it should still be taken seriously. It’s a lot of stuff and I am going to post some highlights below, If you want more say so in the comments.

Occupy Chicago Street Medic Handbook (current edition)

2020 Riot Medicine Manual

Tear gas tactics and defense

Building a cell
Building an affinity group

How rioters are mass producing shields
How to set up blockades
How to make molotovs

Medication exchange network operating out of Minneapolis

Tear gas neutralizer device

Analysis of the Siege of the Third Precinct, as told by a protestor
The Basics of Direct Action
Manual of the Urban Guerrilla, 1969
Direct Action (Pamphlet Version)

How Anti-fa cells work

Each antifa group consists of a solid core of trusted members. Usually with many years of fighting for ideological causes and bona-fides. Almost impossible to infiltrate. Outside members are kept separate from these groups and are simply called upon for various actions.

Learning Land Navigation

Below is an instructional series on land navigation originally written by our now deceased friend, Kevin O’Brien. Kevin, AKA “Hognose” was a US Army Green Beret and was the creator of You can find Weaponsman at the top of this website in the link. After Kevin passed away, his brother handed off care of Kevin’s site to us. Some of our new readers probably didn’t kno0w that or even know what weaponsman is. It’s full of content like below as well as Kevin’s expertise on about everything you can think of.


Well, there’s some pent-up demand for land-navigation how-tos around here. This post will, mostly, just scope the problem.

Navigation implies knowing where you are, where you are going, how you got here, where (and how) you’re going next, and how to get home — not to mention, how to go off in some new direction if the mission changes. Army SF and some other SOF units domestically and internationally think of Land Nav as a foundational skill, a capability enabler or “building block,” and during assesment, selection or primary training, a Must Pass evolution or gate. As a result, guys like SF, certain other ARSOF elements, and some of our international friends (SAS for instance) are some navigatin’ fools.

Anybody wearing the long tab or Green Beret of Special Forces or the equivalent heraldry of the other units mentioned has proven his ability to depart from an arbitrary point and journey to other points 10 to 20 km away, repeatedly, in a straight line, day or night, across any terrain and in any weather. He can find himself on the map (even if all he has is the map, no compass, and no idea where he is on the map). He can also determine with confidence that he is not on the map, and that is occasionally necessary (usually there are thanks due to the US Air Force or other aviators for this sad turn of affairs).

That is a lot of capability and if we started off trying to do that on Day 1, 98% of us would fail. Instead, we eat the elephant a bite at the time, absorbing (and testing) both big-picture concepts, which undergird the whole skill, and many, many microtechniques which, when assembled and drilled thoroughly with increasingly challenging exercises, combine into what looks like a single fluid skill.

Most experienced special operations soldiers navigate primarily by terrain association, when the terrain permits (and by dead reckoning when it does not). They have often formed a mental picture of terrain they will navigate before they ever cross it. The map is not referenced all that often, except in the form of the mental map that one works from.

Navigation techniques depend on terrain. We learned to navigate as a kid, “messing around in boats,” and then in our early SF career as a support guy, mostly in hilly and mountainous terrain. Going to Fort Bragg and Camp Mackall, where the terrain was much more mild, with much less relief, we initially couldn’t even see the terrain features. It was flat as a table, to eyes accustomed to the Green Mountains and White Mountains of New England. At first, we managed by navigating solely by dead reckoning, as if it was flat; in time we came to “see” the hills, ridges, draws and saddles that had been right in front of us all along, but were simply too low in relief.

Navigation techniques also depend on how you’re traveling. Which vehicle, and how fast? If you are accustomed to traveling with LPCs (Leather Personnel Carriers = “boots”) and you hitch a ride with an Abrams platoon, you can’t imagine the tankers keep themselves located at 30 miles an hour, but they do.

The best case is to have a map and a compass. If you have a general idea of the terrain you can navigate without either, of course. But if you have to choose one or the other, unless the map is complete crap, choose the map.

Why not choose a GPS? A GPS depends on things that you cannot control, including satellites (vulnerable to interception and destruction in wartime, and failure in peacetime) and the electromagnetic spectrum (vulnerable to jamming, meaconing, EMP and other QRM — manmade interference — and sunspots, areas of bad radio propagation (like iron-rich geological formations), and other QRN — natural interference.

Jamming GPS signals is child’s play, because (1) the frequencies used are fixed and published, and (2) a satellite is sending a very low-power signal from very far away.

A GPS also depends on something that has a knack for letting a guy down: batteries. GPS navigators and other smart devices are an update of the old pilot’s joke about a flashlight: something you put in your bag to hold dead batteries. (There are circumstances in which this joke is the very living soul of not funny).

What’s a Topographical Map?

A map is a graphic description of a physical place in (usually) plan view, meaning from an imaginary viewpoint overhead. There are innumerable kinds of maps. Planimetric maps are drawn to scale (of which more in a moment), show borders and boundaries, (usually) cultural features like roads, and coast- or water-lines. If you own a house or land, you have probably seen your lot on a planimetric map. A Mapquest street map page is a planimetric map (it’s also a thematic map, which is a kind of map that has a theme, naturally. Thematic maps can be planimetric, but don’t have to be).

A topographical map is a type of planimetric map that also shows the height of the terrain. How do you show the Z axis of the real world on a two-dimensional map? The convention for depicting height on modern topographic maps is to use isometric lines. That scary foreign word just means “same distance,” iso metric, see? So each height-depicting line on the map represents the same vertical distance as the others. This has some useful applications in the real world, which is where we want to use our maps, right?

It is the isometric lines or contour lines (so called because each line follows the contour of the land at a given height relative to mean sea level) that set a topo map (as we call them to save keystrokes) apart from other kinds of maps.

Unless you have occasion to work with very old maps, military topographic maps will be calculated in SI units, with isometric lines a fixed distance apart in meters and marked elevations (of benchmarks, hilltops and other significant Z Axis features) in meters as well, and distances and a scale in kilometers. In the US, topo maps made for civilian use will have these items marked in Imperial units — feet and miles.

Globally, topographical maps are very similar. Anyone who has used a British Ordnance Survey Map, USGS Map, or NATO military map can pretty much make the translation to the others no problem. Even a Russian or Chinese map is very useful (the Russians have always made superior maps). Even if you can’t read the language you can still see the terrain. The various grid systems used are not always interoperable, though. (We’ll get to that).

What’s On A Topographical Map?

There are essentially three things: the geological features, which include the basic shape of the terrain, things like hills, rivers, coastlines, and slopes; the cultural features, which are the things that grow on the terrain or that people build on it, like forests, villages, roads and railroads; and navigational and informational features, including various things that let you use the map.

Geological Features

HILL terrain feature

A map can give you a good handle on terrain features, if you read the contour lines. This bit of instruction uses the topography of human hands to walk you through the most common terrain features. There’s a lot more the lines can tell you, and you pick it up instinctively sooner or later. For example, on any given map, since contour lines come only at one interval, the closer together the lines on the map, the steeper the terrain. You will notice that watercourses are always in the low point, and that contour lines form a V across the watercourse, with the narrow end of the V pointing uphill and upstream. Bodies of water and watercourses are geological features, and they are always depicted in blue.

This web page recycles government training materials meant to train soldiers to understand the association between the contour lines on their maps, and  the terrain on the ground. It shows the basic terrain features; the hill above is one of them. (The page may have an annoying popup. Just dismiss it).

Cultural Features

Cultural features include vegetation, usually shown as green, and anything humans built on the land, including roads, bridges, trails, railroads, power lines, structures, cities, etc. As a rule of thumb, geological features are more stable and useful for navigation that cultural ones. Barring Air Force intervention, a hilltop’s height isn’t going to change. The shape of roads and borders of towns change all the time.

Navigational and Informational Features

There are many of these, including the Legend, which describes the sorts of features you might see on the map; the declination diagram, which we’ll deal with in the next installment; the indicator of north (part of the d.d.) which is rather important; and information about the datum used (this is the mathematical description of the shape of the Earth that undergirds the navigational features) and the grid system. This is where we run into differences by nation and even by purpose of the map and its recency. Datums are occasionally updated and this means grids aren’t interoperable (some US maps still used the North American Datum of 1927 (NAD27)  during our service, and other maps used WGS83 or another datum — a hazardous combination when you’re slinging lead and steel around). The Russians and their allies, for example, use a different grid system (Gauss-Krasovskiy) than NATO and their allies (MGRS, which is a superset of the Universal Transverse Mercator system). This gets interesting when you have lots of nationalities interoperating in one battlespace, but for most of you, the way to deal with this is:

  1. Check that everybody’s map has the same Datum and grid system.
  2. If not, get help! Your friendly SF intel sergeant can probably do MGRS to GK grid conversions, and your weapons guy can deal with artillery tuned with different numbers of mils in a circle.
how grids work

Maps have grids that are set up for a military-type grid reference system, which should let you plot a point quite accurately, or alternately for latitude and longitude, depending on their intended use. Lat/Longs are hard to use in an on-foot situation, because in most of the world parallels and meridians don’t intersect quite squarely. The good news is, that even a map only gridded with lat/longs usually has ticks you can use to set up a UTM grid.

Grids are always read right and up. In map terminology, that’s easting and northing. How and why the grids are set up is part of every military map reading class, but do you know what? You don’t need to know it, any more than you need to know how a torque converter works to drive a car. Yes, it’s great to have knowledge in depth, but right now, you need knowledge you can use. 

Some Homework if you want it:

Reading Topographic Maps, by the OK Geological Survey.


Sergeant First Class Roner was probably of average height, or a little above, but thanks his bearing he seemed tall. He had broad shoulders and the lean build of an all-round athlete, and a mop of curly black hair that was cut by a barber who knew what he was about. He completed the image with gold-framed and mirrored Ray-Bans, a Rolex Submariner, and a set of camouflage fatigues that were tailored just enough to underline the fact that he took pride in his martial appearance, and not too much so we could all see that he was not a garrison soldier who would dress impractically. On the instructional podium, which is where we knew him from, his native Panamanian accent was offset by a natural actor’s — or maybe a trained one’s, for all we knew — projection and diction. He was altogether the sort of thing we called Hollywood, which in our circles was not a term of endearment.

And we might have been just a wee bit jealous, because SFC Roner already had his, and he was a gatekeeper who stood athwart our path to having ours. Special Forces qualification, that is. In a minute he was going to release us on the Day Land Nav course, aka the Star Course, and in the next three days or so about half of us would be gone.

Rrrolex time isss,” he announced, and gave us the time hack. One of the other instructors had tried to hand him a bullhorn; he didn’t take it. He didn’t need it; we were so on edge that he could have whispered, but his voice carried across the broken camp. “You have eight hours from release… in five, four, three, two, one go!” 

And at that most of the guys went. Some of us took a moment to confirm an initial azimuth and then we trotted off, counting each step. Over the next two days we’d walk, run or jog almost 50 kilometers by day and 18 in the dead of night, with ruck, rifle and gear, hitting multiple points, each one usually miles from the last. It was hit the points, or hit the truck. You didn’t want to hit the truck.

How did we do it? With two essential tools: compass and pace, and an ancient form of navigation called Dead Reckoning. Dead Reckoning depends on the principle that if you begin from a known point, and then make a movement of a given azimuth for a given distance, there is only one point you can be at when you stop.

In a flat, unobstructed world, all you would need is a map, to plot your start and end points;  a compass, on which you could set your azimuth; a pace count, which translates your steps into real distance; and willingness to trust those tools, to go to anywhere you can walk to on land.

In the real world, there are more problems but there are also more tools you can use. The difference between the graduates and the recycles (or NTRs) at SFQC was often those extras, because by this point, you had map, compass, and pace count down. 

The Map and Azimuth

This is a declination diagram (this one’s from this post, where the use of one is explained).

Plotting your course on the map requires you to know where you are. (There are various ways to determine this, if you’ve become, in Daniel Boone’s terms, “a mite bewildered.” But let’s assume arguendo that you know that, for now). And it requires you to know where you’re going.

Now, draw a line between Point X and  Point Y — if you can go straight. (You might need to make your course several shorter legs because of obstacles). If you must make a turn, make every effort to make it on a recognizable terrain feature. “I’ll be on the summit of this hill, and when I turn to my new azimuth there will be low ground on three sides and a saddle on my right.” Note the distance. “It’s 1700 meters.” Now do the next leg, and so on to your destination. Time spent plotting is never time wasted; you’re impressing the expected terrain in your mind. (Maybe not the first time you do it, but soon enough, with practice).

Now go back over your legs and look for additional checkpoints. “At 700 meters, on the first leg, I cross power lines. From there it’s 1000 meters to my turning point on the hill. On the second leg there’s a lake on my right; it should be closest to me at about 2100 meters down that leg.”

Time spent plotting is never wasted, and shortcuts in plotting will not help as much as you think.

The Compass and Azimuth

Compasses usually have some kind of ring that you can set so that the north-seeking arrow is aligned with magnetic north while some indicator on the compass points towards your destination — or at least your next checkpoint. This ring in the service is called the “bezel ring” which is redundant, but there it is. (The compass maker often uses just “bezel.”)

The Silva compass is practical and simple, although it’s not as effective for two purposes as a genuine military lensatic: for such things as calling artillery fire or otherwise taking a bearing, one, and for use at night, because the military compass includes tritium ampules in the needle and orienting indicator. (You can get some after-dark use out of the Silva by sticking luminous material to the base to backlight it). The Silva is great at picking up your azimuth from the map for you (remember to correct for declination with military maps and as needed).

It can be difficult walking in a straight line in some environmental conditions. For example, in forest you cannot see very far. So, line up your azimuth, pick a prominent tree in line with your azimuth, walk to the tree, and shoot the azimuth again, pick a tree — repeat as needed. Once you have your tree or other target picked out, you can just walk there and don’t need to play with the compass. (When you’re new at this, you’ll probably do a lot of crosschecks as your confidence builds. That’s OK!)

In this manner you can walk straight and avoid being turned around, even when you have to walk for miles and miles.

Pace Count

OK, so we’ve solved half of the polar-coordinate problem that is navigating by Dead Reckoning, to wit, azimuth, or, for the vocabularily challenged, “the left-right thing.” So we know where to go; how do we know then next piece of vital information, when to stop? We do it by counting our steps.

To establish your pace count in a given terrain (and while bearing a given weight, because load-bearing changes your gait), you need to count your steps over a known distance on similar terrain. Walk the same distance course several times in both directions, then average your total steps, then reduce to a rate of steps per 100m.

Then, when you’re walking, count your steps by the hundreds of meters, mentally cross-checking the expected terrain. When you make it to 100m, by pace count, note that and start counting again. At first you will constantly cross-check terrain against your pace count (“Should I be crossing a road at 450 meters?”), but in time you will come to use it confidently.

Put it all together, and with map, magnetic compass, and pace count you can go anywhere (well, you’ll have problems in the far arctic or antarctic. But in the temperate, tropical and subtropical latitudes most of us dwell in, you’ll be pretty mobile cross-country.

There are advantages to this. Most of humanity, and in First World countries almost all of humanity, is road-bound. With a map, a compass, and two good legs, you are not. This entry was posted in Land Navigation, SF History and Lore on by Hognose.

About Hognose

Former Special Forces 11B2S, later 18B, weapons man. (Also served in intelligence and operations jobs in SF). View all posts by Hognose →

Review: Mantis X10 Elite – Shooting Performance System

BLUF: The Mantis X10 system is a sensor that you attach to your firearm that you use with a smart phone app that gives you a variety of tools for training and data for diagnosing your trigger pull. It has a number of great features making it well worth the cost, but I also had a few issues with it, mainly the mounting system.

The biggest compliment I can give is that everyone I showed the X10 was absolutely amazed and wanted one.

A rep from the Mantis company contacted us about doing a review of the MantisX system. I was very excited at that opportunity as I had considered buying their product before. Not sure why I didn’t. Probably got distracted by something else I could buy. Their website is

They have several models of the MantisX system. The X2 is $99 and for dry fire with handguns only. The X3 is $169 and covers dryfire and live fire for handguns and rifles. X7 is made for shotguns and is $199. For $249 you can get the X10 that has all the features and capabilities.
I think if you are going to buy one, get the X10. This is one of those cases it would be better to “buy once, cry once”.

Mantis has excellent packaging. From the box to the carrying case with cut foam for the unit. The X10 mounts directly to a M1913 picatinny rail and comes with a clamp mount with shims so it can be attached to a barrel or magazine tube. They package it as the premium product it is.

Minor complaint: You will need to charge the unit using the included micro-USB cable before you use it. This isn’t mention on the quick start guide.

These units can mount directly to a picatinny rail, but they will only mount directly to a picatinny rail. Mantis came up with a very nice mounting system where you have a spring loaded lever that retracts the recoil lug allowing you to slide the X10 onto a rail. You change settings in the app to let it know if the unit is mounted forwards or backwards on the rail, and if it is on the top/bottom/left/or right side of the gun.

I would love to have this mounting system for a flashlight or a bipod. But unfortunately it only works on in-spec rails that you can access one end. I can’t mount it to the top of my B&T APC9K because there is an iron sight on each end. You can not directly mount it to a Glock pistol’s universal rail. You would have to buy an adaptor like the Recover OR19 shown in the picture below.

This is my only major complaint about the Mantis line of products. Normally I would dislike a weaver spec thumbscrew, but in this case, it would have allowed this unit to mount to a wider variety of firearms.

Fortunately there are any number of adapters and accessories that would let you mount this to any firearm. Mantis also sell items like replacement magazine baseplates with a rail section on them. If your gun does not have a rail on it, expect to have to pay another $20 or so dollar to get an adapter. Also, if your rails are out of spec, it can be a real pain to get the Mantis to slide on and off.

But this sensor is just the hardware. It is the software app that you install on your phone that is the heart of the system.

I downloaded the MantisX app my my beat up Galaxy S9 and paired it using Bluetooth to the X10.

Note: You need to have the GPS on to be able to pair successfully. I had numerous issues with connectivity and pairing. I believe this to be caused by my beat up, nearly broken, phone. The Rep at Mantis insisted on replacing the unit I was using. I’ve still had some connectivity issues which leads me to believe it is my phone at fault.

There are a variety of training problems and options for how you use the X10. There are so many different options available to you that I don’t know where to begin describing them. Many only show up depending on the weapon info you have selected. E.G. There are separation options and settings for long arms vs hand guns.

Let me start with what I found most useful. You do some dry fire, or live firing training, then have it give you feedback.

Here are a couple of screenshots from different drills. On the left you can see how it scored me on a day I was doing pretty good. On the middle, you can see that I just did some quick dry fire and was pulling the gun to the left. The rightmost image shows the advice for correcting my deficiency.

They have even put together little training programs to get you started and familiarize you with their app.

I used the recoil meter to compare some of my shotguns in this other article HERE. I found it interesting to see that one of my shotguns had twice the muzzle flip of a different one of mine.

What I find most useful is the trace of the movement of the gun just prior to the shot breaking.

MK12 Rifle from the bench
Pistol offhand

On the left you can see the movement prior to the shot breaking on one of my rifles I was firing off a bipod. On the right you can see how I moved prior to firing a shot from a pistol offhand.

To me the unit is worth the cost just for this feature.

I love this feature!

Sadly, the MantisX app does not export this data for you to show off. I suggested that they add this feature. I had to use a screen recorder app to get these .gif files.

I just learned the other day that you can also watch this movement live. You can have the app show you the movement in the run in real time, and also show you if the gun muzzle is tilted up or down or if the gun is canted side to side.

There were a number of features I have not been able to try. For example there is a tool for diagnosing your draw from the holster. However I don’t have a holster that will accommodate the X10 and the necessary Glock adapter. So I did all of my pistol shooting with it using a SIG P320. There are reload drills, drills for high power rifle match style shooting, etc, and a great number of options I did not get the chance to try out.

An example of a minor issues I had. There is a shot timer option. You hit start, your phone beeps, and you fire(or dry fire). If you had the phone on a table, or someone else holding it, I think this would work great. As I was in the middle of a firing range bay, I would have to hit start, then try and pocket the phone and get ready to shoot before the buzzer would go off. I’m slower at pocking a phone than moving a gun. With the connectivity issues I had, sometimes when I pocketed the phone or had anything between line of sight between the phone and the X10 I would lose connection. This wasn’t an issue when I was able to fire from a firing line bench and could set the phone on the bench. As I said before, I think the connection issues are the fault of my busted up old phone.

Ultimately, if someone is a brand new to shooting, they need training. This is not a substitute for training with an instructor. Once someone knows the fundamentals and they are training to fine tune their skills and correct problems, this could be a very useful tool.

People often say, “practice makes perfect”. But only perfect practice makes perfect. If I were to spend an hour a day dry firing while jerking the trigger, it would only reinforce a bad habit and make it harder to shoot well. We need to make sure our practice is using the correct form, so that we can internalize the correct techniques as muscle memory.

I have been taught to watch the movement in the sights as the shot breaks to call where your shot went. I believe this to be a very important skill and very useful in improving your shooting. But sometimes a shot goes wild and I am left wondering, “What the hell happened?”. It is nice having a digital record showing if it was me or something else to blame.

This X10 also makes me want to compare firearms with it. I want to see if my 1911 or my .45 ACP Glock 30 has more muzzle flip. Or the Sig P320 vs Glock. Some guns just feel better to me, but this would let me have numbers I could compare and show off. A Pact timer can show how fast you are shooting a gun, but it can’t record how consistently you shoot with it. This can.

The smart phone app has been updated twice during the time I have been trying out the X10. It is clear that the devs are continuously working to add new features and improve their product.

I think the X10 is well worth the cost as a training aid. But I do hope that they will consider making a model that I could directly attach to my Glocks. Maybe I should also get around to replacing my phone.

You can learn more at their website or their youtube channel.

Ugh, I hate rust.

Left some of my cheap practical steel cased ammo in the truck of my car. Went to do some training today and found it was rusty.

I decided I was going to go ahead and use it, perhaps get the chance to practice my malfunction drills. I found that the B&T APC9K ate up this rusty ammo with no complaints. Only had one failure to fire on the Sig M17.

Really goes to show the value of proper ammo storage.