Sgt. Hannah S. Jacobson, machine gunner with Weapons Company, Ground Combat Element Integrated Task Force, provides close supporting fires for their squad while engaging targets with the M240B Medium Machine Gun during a Marine Corps Operational Test and Evaluation Activity assessment at Range 107, Marine Corps Air Ground Combat Center Twentynine Palms, March 10, 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. - Sgt. Hannah S. Jacobson, machine gunner with Weapons Company, Ground Combat Element Integrated Task Force, provides close supporting fires for their squad while engaging targets with the M240B Medium Machine Gun during a Marine Corps Operational Test and Evaluation Activity assessment at Range 107, Marine Corps Air Ground Combat Center Twentynine Palms, March 10, 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.