Lensatic Compass A Marine Corps officer candidate uses a lensatic compass to determine azimuth angles and bearings before proceeding to his 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 (0.81 MB) Tags: marine corps base quantico, marines officer candidates, small unit evaluation, ocs class-221, virginia Credit: Cpl. Patrick Owens VIRIN: 160218-M-JH446-031A.JPG Photo Gallery