Kids: No kids where there should be many is a bad sign of imminent threat.
Checkpoints: Watch for opponent weapon status (flap holsters?, no magazines in weapons?, AK safeties on/off?, crew served gunner asleep at the wheel?, amateurs or pros?, etc.)
Mass shooters: Look very calm and move deliberately; victims look panicked and move out like track stars; the old and out of shape slip, fall, or have coronaries attempting to escape the scene.
First reports are almost always B.S.
Charging Off-Leash Dobermans: Counter charge right back at 'em; be aggressive, big, and loud. It screws up their plan. Three times so far.
If you stare intensely at the back of a sentry's head he will turn around and look for you.
Visible fresh blood and broken things should bring you instantly to high alert.
Most panhandlers holding "Will Work" signs... Won't.
People ignore car alarms in broad daylight.
Eye witnesses are often wildly wrong.
Stolen wallets, pocketbooks, etc. are usually recovered close to the scene (in a trash can, dumpster, over a fence, or behind bushes). After being ransacked for cash or cards.
Two people in a knife duel will be encircled by their buddies in an ever-shrinking cordon of flesh...allowing neither an avenue of escape.
Never let your child go into a public restroom alone. There are truly creepy people afoot.
Don't chase tornadoes when intoxicated. You will find one (and become instantly sober...possibly even religious).
If you find yourself in an area where the local police are only found in groups of five or more...you are in a really bad part of town.
Explosions in the movies look like cool fireworks (with fireballs). Real ones look like an abattoir on fire (coated in grey dust, blood, body parts, offal, broken glass, and ripped metal).
If a mountain lion stares at the back of your head long enough, you will turn around and look for him.
When a suicide vest wearer detonates, their head usually launches into the air and travels for several dozen yards like a soccer ball.
Always wear shoes in which you can run across broken terrain.
When dealing with LEO, politeness and respect counts. Where law enforcement is an entrepreneurial endeavor, cash counts more (most of the rest of the world).
Bad things mostly happen to stupid people doing stupid things in places where other stupid people congregate. Avoid those folks and those places.
Always have a knife, a lighter, and a small compass.
Never get in the middle of a mob or drive towards one. Never get between troops/police and the mob or protest crowd that is the object of their desire.
Better to personally know the police than not.
Everyone is right in their own eyes.
There are two sides to the story with the truth somewhere in between.
Most gunny folks who claim to have never had an AD are either lying or simply waiting in the future AD line.
Watch their hands.
A few simple props and a an actor's attitude will carry you through improbable scenarios. People will tend to believe you are who you say you are...if you can carry it off with assurance and aplomb.
If you run towards armed people with a gun in your hands, they will usually shoot first. Especially at night.
Most people, upon hearing but not seeing gunfire, will completely ignore the possibility of danger and fail to seek cover.
Police Brutality is not even a legal construct in most parts of the world. Ditto for the concept of Individual Civil Rights. Once you leave the US...you aren't in Kansas anymore Toto. Smile, do exactly as the officer says, pay the money...or be ready to fight.