The only five-star general in Air Force history, Henry H. "Hap" Arnold played a prominent role in the history of Howard AFB and military aviation in Panama. As a captain, Arnold led the first air unit, the 7th Aero Squadron, to the Isthmus on March 29, 1917. Within a week, he left for Washington, DC, and more pressing duties there. When he returned to Panama in May 1939, he was a major general and chief of the Army Air Corps. The purpose of his visit was to select a site for a new air base. He chose what is now Howard AFB and suggested the name Howard Field, in honor of Major Charles H. Howard, a personal friend and former subordinate who had served in Panama during the period 1926–1929 and who had been part of Arnold's crew on his famed flight of B-10 bombers to Alaska in 1934. Major Howard died in an air crash on October 25, 1936. On December 1, 1939, the new air base officially became Howard Field.