Flying Tigers

B-17F Hell's Angels, tail number 41-24577, flight and ground crew. The first heavy bomber to complete 25 combat missions in the European Theater, May 13th, 1942. 
After completing 25 missions, Hell's Angels remained in the European Theater of Operations until 1944 and flew a total of 48 missions without any injured crewmen or abort. 

Twenty five missions plus, fame...

The chin turret of a Boeing B-17G bomber with the cowling removed, revealing its six .50 caliber machine guns (June 17, 1944)
taken from fb/Warhistory online