Defensetech's Dan Dupont says,
Back in college I had a Soviet studies professor whose office was decorated with lurid, humorless security posters from the U.S.S.R. I thought they were artifacts peculiar to repressive, secrecy-obsessed regimes — until I started covering the Pentagon.
On bulletin boards, doors and office walls throughout the building, my colleagues and I would find dozens of security posters and signs of varying quality and message some of them just as spooky as those Soviet posters in my professors office (and some still focused on the Soviets, for that matter). My favorite, which one of my co-workers was kind enough to swipe for me, was a warning to government officials about to travel abroad. Get your travel threat briefing before departing, it screamed, the words surrounded by hideous, bloody drawings of what might happen to if you weren't careful hostage situations, attacks in cafés, etc.
Link to the best and worst of US military security-awareness posters. There's a whole lotta WTF up in here!
Also on DefenseTech today: this weird robo-mule with a leg-wheel hybrid. Link. (thanks, Noah Shachtman)