Collections (19)Aerial reconnaissanceIdeas 2×In progress 2×Completed 2×Air CombatIdeas 10×In progress 8×Completed 1×Area 51Ideas 1×In progress 2×Completed 2×Armored WarfareIn progress 1×Completed 1×Cold WarIdeas 8×In progress 6×Completed 10×D-Day NormandyIdeas 1×In progress 5×Death from AboveIdeas 6×In progress 7×Completed 1×Movie StarsIdeas 6×In progress 4×Completed 3×NASAIdeas 1×Completed 5×Naval AviationIdeas 10×In progress 4×Completed 1×Naval warfareIdeas 1×In progress 1×Completed 4×Operation Enduring FreedomIn progress 2×SpaceIdeas 1×Completed 5×Special OperationsIdeas 2×In progress 6×Strategic bombingIdeas 1×Completed 2×Tom Clancy'sIdeas 1×In progress 7×Completed 3×Vietnam WarIdeas 1×War in UkraineCompleted 1×World War IIIdeas 5×In progress 5×Completed 1×