He was a ball-turret gunner. Climbed back up into the fuselage after an engagement just in time to see a waist gunner unsuccessfully bailout (hit the stabilizer).
He dumped the burning ammo boxes, peed on fire to put it out, and took care of the remaining, wounded, waist-gunner.
I'm pretty sure Miss Meth-Head will be getting awards of a completely different nature.
I bet ball turret gunners had really big bladders...