Sometime in 1944 — Over Occupied Europe
Capt Leland 'Spike' Simpson was flying lead bombardier for the 445th Bomb Group on a mission to destroy a bridge shortly after D-Day. He came off the bomb sight to show the navigator, Jim Withey, how the bomb sight was locked onto the target. As he was moving back onto the sight, a flak hit near the aircraft caused him to accidentally hit the bomb salvo release switch mounted on the rear of the nose gunner's seat with his helmet. It was a perfect bomb drop for the 445th Bomb Group - except they were 1 mile short of the target.
After that incident, he became known as "The Head".
Related to me by Jim Withey who flew 10 missions with my Dad.