Kerry's specialty was coup de grace shooting severely wounded Vietnamese as they tried to crawl away.
From:
http://www.boston.com/globe/nation/packages/kerry/061603.shtml {SNIP}
“…In the distance, an elderly man was tending his water buffalo -- and serving as human cover for a dozen Viet Cong manning a machine-gun nest.
"Open fire; let's take 'em," Kerry ordered, according to his second-in-command, James Wasser of Illinois. Wasser blasted away with his M-60, hitting the old man, who slumped into the water, presumably dead. With a clear path to the enemy, the fusillade from Kerry's Navy boat, backed by a pair of other small vessels, silenced the machine-gun nest.
When it was over, the Viet Cong were dead, wounded, or on the run. A civilian apparently was killed, and two South Vietnamese allies who had alerted Kerry's crew to the enemy were either wounded or killed….”