Prime Base Engineer Emergency Force members from the 436th Civil Engineer Squadron use a map to plot waypoints during a landing navigation exercise Oct. 21, 2020, on Dover Air Force Base, Delaware. Sixty-four Prime BEEF members made up 10 teams in a 96-hour readiness exercise that included self-aid and buddy care, vehicle convoy techniques and land navigation exercises prior to arriving at the Tactics and Leadership Nexus. While at the TALN, they participated in night vision goggle familiarization; chemical, biological and radiological and nuclear defense training; individual movement techniques; and defense fighting position exercises. (U.S. Air Force photo by Roland Balik)