91st Observation Squadron

91st Cyberspace Operations Squadron
91st Tactical Reconnaissance Squadron McDonnell Douglas RF-4C-37-MC Phantom 68-0561, 1992.
Active	1917–2008
Country	United States
Branch	United States Air Force
Role	Network Warfare
Motto(s)	"Demon Chasers"
Engagements	World War I World War II - American Theater Korean Service Medal
Decorations	Distinguished Unit Citation Air Force Outstanding Unit Award with Combat "V" Device Air Force Outstanding Unit Award (14x) French Croix De Guerre (World War I) Republic of Korea Presidential Unit Citation
Commanders
Notable commanders	Captain George C. Kenney
Insignia
91st Cyberspace Operations Squadron emblem (approved 12 February 1924)

The 91st Cyberspace Operations Squadron is an active United States Air Force unit, currently assigned to the 67th Network Warfare Wing at Kelly Annex, part of Lackland Air Force Base, Texas.

The 91st COS delivers cyber warfare capabilities to combatant commanders. It provides the Air Force with manpower.

Established as 91st Aero Squadron in the summer of 1917 at Kelly Field, near San Antonio, Texas, the unit was sent to France during World War I as one of the initial American Expeditionary Force aero squadrons. The 91st served on the Western Front in France as an observation squadron with the French Eighth Army and United States First Army, 3 June – 10 November 1918. The primary mission of the 91st Squadron was to gather information and immediately return to base to report it. After the November 1918 Armistice with Germany, the 91st Aero Squadron remained in Europe, as part of the occupation forces in Germany with the Third Army (United States) until April 1919.

After returning to the United States, the squadron was reorganized and assigned to Rockwell Field, near San Diego in September 1919. In California, its duties consisted of patrolling the southwestern U.S./Mexican border between California and Arizona, performing forest fire patrols and flying training flights over forested areas along the coast of California while assigned to Crissy Field, near San Francisco. Between 1919 and 1922 the squadron frequently moved between bases in California and Oregon with detachments deployed locally to meet operational needs.