Alan Clyne recently retired from the US Marine Corps after a long career. Clyne was in Iraq in 2005 when he was tasked with driving an armored bulldozer to clear a path for engaged fellow Marines:

It was there, at a tiny forward operating base called Camp Gannon in November 2005, that Chief Warrant Officer 4 Clyne and a fellow Marine, Master Sgt. Scott Witmer, hopped aboard an armored Caterpillar D9 bulldozer that neither man had been trained to operate and drove into a high-risk rescue mission in an active combat zone.

A tank accompanied them — from Read more