Established in 1940 and activated in 1941 as a bomber squadron, assigned to the GHQ Air Force Northeast Air District. Trained and was equipped with both early model B-17C/D Flying Fortress heavy bombers and B-18 Bolo medium bombers at Langley Field, and flew training missions over the Mid-Atlantic States. After the Pearl Harbor Attack, was deployed to New England and began flying antisubmarine missions from Bangor Airport over the Newfoundland Straits and performing aerial convoy patrols over the North Atlantic shipping lanes.