An emergency release mechanism for your pants incase your penis gets zipped up into it when zipping up your pants.
After i was done last night i was putting on my pants when i came inches from slicing open my urethra. Thankfully i was wearing my zimmerman zipper. I pulled my emergency rip cord and that situation was narrowly avoided.
The pattern of behavior which erupts after a person has shot another to death in cold blood, marked by anger, denial, specious justifications, depression, copious hand-washing, paranoia, avoiding public exposure, etc... and perhaps even several attempts at an apology. Often resulting in the abuse of highly addictive pain-killing drugs and ending in attempts at suicide.
These soldiers returning home from an unpopular foreign campaign are likely to suffer severe Zimmerman Syndrome when theadrenaline wears off and they realize they killed a lot of innocent people along the way to their goal.