One of my LURP buddies told me about a booby trap incident that placed a pineapple grenade inside a can with a piece of fishing line attached. Step through the line and it pulls the grenade out of the can, the spoon flies off and 4 seconds later it goes off. This guy immediately knew what it was because the fuse started smoking. Everyone cleared the area except one fellow who just stood there, he was killed by the blast. Funny how people just freeze in an emergency. The guy told me that if it had been an M26 they would have never seen it and lost a bunch of guys. I think that people underestimate what a grenade can do, they are powerful.