U.S. Marines from Delta Company, Infantry Training Battalion (ITB), School of Infantry - East (SOI-E) execute crunches during a physical fitness test, Camp Geiger, N.C., Sept. 25, 2013. As part of a measured, deliberate and responsible collection of data on the performance of female Marines when executing existing infantry tasks and training events, the Marine Corps is soliciting entry-level female Marine volunteers to attend the eight week basic infantryman and infantry rifleman training courses at ITB. (U.S. Marine Corps photo by Staff Sgt. Christine M. Wilcox, Combat Camera, SOI-E/Released)