Collections (22)Aerial reconnaissanceIdeas 2×In progress 3×Completed 2×Air CombatIdeas 10×In progress 12×Completed 5×Area 51Ideas 1×In progress 2×Completed 2×Armored WarfareCompleted 3×Cold WarIdeas 9×In progress 8×Completed 12×D-Day and the Battle of NormandyCompleted 7×Death from AboveIdeas 6×In progress 9×Completed 6×Deutschland!In progress 4×Completed 3×Grumman's CatsIdeas 3×In progress 2×Completed 1×Movie StarsIdeas 4×In progress 5×Completed 6×NASAIdeas 1×Completed 5×Naval AviationIdeas 9×In progress 6×Completed 2×Naval warfareIdeas 1×In progress 1×Completed 4×Operation Enduring FreedomIdeas 1×In progress 3×SpaceIdeas 1×Completed 5×Special OperationsIdeas 2×In progress 7×Strategic bombing and nuclear detterenceIdeas 1×Completed 5×Tom Clancy'sIdeas 1×In progress 7×Completed 3×USAAF/USAF Tactical Air PowerIn progress 7×Completed 4×Vietnam WarIdeas 2×War in UkraineCompleted 1×World War IIIdeas 2×In progress 7×Completed 7×Queued 1×