here is an article on just that situation glockfan..
http://articles.latimes.com/2005/jan...fg-iraqdrugs13
from the article.. ""On the second day of the fight, word came down to focus on head shots, that body shots were not good enough," said 1st Lt. Tim Strabbing, a platoon leader with the 3rd Battalion, 1st Marine Regiment, 1st Marine Division, one of the lead units in the assault to oust the insurgents. The battalion, known as the Thundering Third, suffered 23 dead and 300 wounded.
Strabbing said his platoon found five locations with stockpiles of needles and adrenaline. "My guys put five [machine gun] rounds into a guy who just stood there and took it and then took off running," he said.
Stimulants enable the body to continue functioning despite mortal wounds, forestalling, although not preventing, death, medical experts say.
Many combat veterans recall watching insurgents in Fallouja who had been shot at close range return fire and hurl grenades at Marines who stormed their strongholds.
"We actually shot four or five guys multiple times and they got up and moved across the room," said corpsman Quinton Brown, who had accompanied a front-line platoon to treat wounded Marines."