A Marine called Cowboy was so terrified he would shake audibly and urinate on himself during ambushes, making him a danger to everyone around him. The lieutenant gave him an official out. He refused to leave. Clark's gun team took him in, taught him Bible verses, and tried to steady his nerves. Then, in the Dodge City graveyard battle, a corpsman and Chan found no significant wound on Cowboy's body — he had died of fright-induced heart failure.