sentences:  Resuming his work at Wright Field, Hegenberger developed the first blind flying landing system, and on May 9, 1932, made the first complete solo blind flight from take-off to landing, for which he was presented the 1934 Collier Trophy on July 22, 1935, by President Franklin D. Roosevelt.He joined the 30th Bombardment Squadron at Rockwell Field, San Diego, California, in August 1935, and was made squadron commander in October.He later moved with this unit to March Field, California, where he served until August 1937.