Sgt Charles P. Sierra flew 23 missions, from 11/26/1943, mission #1, to 04/10/1944, mission #48. He served as a Right Waist Gunner.
Sgt Sierra served with the following crewman: T/Sgt Duane G. Brandt, T/Sgt Allen D. Brown, Sgt Cecil C. Estess, Capt Gaston M. Fox, Sgt Joseph Gallas, 1st Lt Francis W. Hoad, 2nd Lt Leonard J. Mendelson, Sgt Donald W. Van Boovan and 2nd Lt Darrell D. Wilson