91st United States Congress | The Sabre Squadron | No. 33 Squadron RAF | No. 263 Squadron RAF | squadron | Pacific Squadron | No. 45 Squadron RAF | No. 127 Squadron RAF | No. 617 Squadron RAF | No. 43 Squadron RAF | No. 38 Squadron RAF | No. 107 Squadron RAF | German East Asia Squadron | Far East Squadron | Squadron (aviation) | No. 77 Squadron RAAF | No. 71 Squadron RAF | No. 49 Squadron RAF | No. 48 Squadron RAF | No. 2 Squadron RAF | No. 233 Squadron RAF | No. 133 Squadron RAF | Asiatic Squadron | 44th Fighter Squadron | 24th Tactical Air Support Squadron | 160th Fighter Squadron | Volunteer Gliding Squadron | Television Infrared Observation Satellite | Squadron Sinister | Pearl the Observation Car |
Built in 1921 the building originally served as a Crissy Field airplane hangar, which helped launch De Havilland DH-48 biplanes as part of the US Army 91st Observation Squadron.
Emmons went to Crissy Field, California in August 1924, where he served as commanding officer, and then to Rockwell Field as commanding officer of the 91st Observation Squadron.