O'Brien details with great anger the different types of mines one comes across in the My Lai. Bouncing Betty is the explosive that scares the soldiers the most. Once a soldier steps on the three pronged mine, it leaps up one yard and kills. Booby-trapped mortar and artillery rounds are often suspended from tree branches or buried, particularly beneath the floors of thatched huts. The M-14 anti-personnel mine takes off toes and feet. Booby-trapped grenades in tin cans attached to trip wires blow a man to pieces. The Soviet TMB and Chinese anti-tank mines detonate under vehicles or large soldiers. The directional fragmentation mine has the effect of a twelve-gauge shotgun fired at close range. The corrosive action car killer is a grenade wrapped with a rubber band tossed.....