Advancing on Snow Marine Corps officer candidates advance to their next objective during a small-unit leadership evaluation at Brown Field on Marine Corps Base Quantico, Va., Feb. 18, 2016. Marine Corps photo by Cpl. Patrick H. Owens SHARE: Download: Full Size (1.02 MB) Tags: Marine Corps Base Quantico, Marines Officer Candidates, Small Unit Evaluation, OCS Class-221, Virginia Credit: Cpl. Patrick Owens VIRIN: 160218-M-JH446-012A.JPG Photo Gallery