Log Labor Marine Corps recruits conduct log drills as part of the Crucible at Marine Corps Base Camp Pendleton, Calif., Dec. 29, 2021. The 54-hour event, which involves multiple physically and mentally demanding tasks, is the final challenge of recruit training. SHARE: Download: Full Size (3.01 MB) Tags: training, Marine Corps Credit: Marine Corps Sgt. Christopher Madero VIRIN: 211229-M-MI059-1003R.JPG Photo Gallery