Sgt. Daniel C. Downing, drill instructor, Company G., 2nd Recruit Training Battalion motivates recruit Aaron G. Real, Co. G, 2nd RTBn. during an inventory physical fitness test March 5 aboard Marine Corps Recruit Depot San Diego. For 12 weeks of recruit training, men who accept the challenge of becoming Marines are put through numerous physical strains to help them increase their final PFT scores. - Sgt. Daniel C. Downing, drill instructor, Company G., 2nd Recruit Training Battalion motivates recruit Aaron G. Real, Co. G, 2nd RTBn. during an inventory physical fitness test March 5 aboard Marine Corps Recruit Depot San Diego. For 12 weeks of recruit training, men who accept the challenge of becoming Marines are put through numerous physical strains to help them increase their final PFT scores.