Lance Corporal Alex B. Kanough, rifleman with Provisional Rifle Platoon, Company A, Ground Combat Element Integrated Task Force, and Falande Joachin, with 1st Platoon, fire the M4 Modular Weapon System during a zeroing exercise at Range 106, Marine Corps Air Ground Combat Center Twentynine Palms, California, Feb. 24, 2015. From October 2014 to July 2015, the GCEITF will conduct individual and collective level skills training in designated ground combat arms occupational specialties in order to facilitate the standards-based assessment of the physical performance of Marines in a simulated operating environment performing specific ground combat arms tasks. (U.S. Marine Corps photo by Sgt. Alicia R. Leaders/Released)