Pfc. David Hutchinson's convoy encountered heavy opposition from the Taliban, but his reaction with the Mk-19 grenade launcher helped avert a disaster for U.S. troops.  (Photo courtesy of David Hutchinson)

Pfc. David Hutchinson’s convoy encountered heavy opposition from the Taliban, but his reaction with the Mk-19 grenade launcher helped avert a disaster for U.S. troops. (Photo courtesy of David Hutchinson)