Army Air Corps personnel - Bassingbourn, England.
Sgt. Matt Pettera, Asst. Crew Chief; T/Sgt. Alfred Ciarimboli, Instrument Shop; M/Sgt. Edward "Pinky" Pinkowski, Crew Chief.
The "Creep" was a small vehicle built by the ground crew for getting instruments to the planes. The crew that built it was featured in a "Stars & Stripes article in 1943 or early 1944.
The plane in the picture is "Frank's Nightmare".