LEAN MARINES Marine Corps recruit Brenon Sarratori, foreground, strengthens his core muscles during a physical training circuit course on Parris Island, S.C., April 29, 2014. Sarratori is assigned to Kilo Company, 3rd Recruit Training Battalion. Recruits conduct numerous types of strength training to pass the physical and combat fitness tests as well as meet the Marine Corps' physical standards. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 691964-Q-IJN71-326.jpg Photo Gallery