Hurd's Airmen: Crew Chief ... page 71

No one worries more when a bomber is in the air than its crew chief. He sits back at the base in a dispersal but "sweating it out" while the crew members take it over the target. A typical crew chief is Tech. Sergeant Frank McCarter from Tennessee who is in charge of the Flying Fortress Yankee Doodle. It is his job to see that it is in perfect mechanical condition at all times. On him in a large measure, depends the safety of the whole flying crew and the success of a mission. Sergeant Mac's alert face was painted before the Fortress whose care is entrusted to his loving and capable hands.

Life February 15, 1943