Maj. Ralph Royce leads a mass flight of AAC pilots flying Curtiss P-1C Hawks from Selfridge Field, Mich., to Spokane, Wash., and back during severe winter weather to gain experience for flying in the Arctic. Royce is awarded the 1930 Mackay Trophy for the flight.
Navy Adm. Richard Correll succeeded Air Force Gen. Anthony J. Cotton as head of U.S. Strategic Command on Dec. 5, stressing the need for the combatant command to understand and embrace new technologies for its deterrence mission.

