U.S. Army Spc. Natasha Shaw, Medical Department Activity optical lab specialist, and U.S. Army Sgt. Dequan Davis, MEDDAC patient administrator, study maps in Fort Eustis’ Training Area 23 at Joint Base Langley-Eustis, Virginia., April 11, 2018. The Soldiers were tasked with locating four designated points using only a map and compass in a land navigation exercise. (U.S. Air Force photo by Airman 1st Class Monica Roybal)