Devastators off Hawaii, USS Enterprise Torpedo Sqn 6, 1941 prewar.
More details from Jim- Tail colors assigned to the US Carriers between the wars-
CV-2 Lexington - Lemon Yellow
CV-3 Saratoga - White
CV-4 Ranger - Willow Green
CV-5 Yorktown - Insignia Red
CV-6 Enterprise - True Blue
CV-7 Wasp - Black
Example: True Blue tail = These are from USS Enterprise CV-6 (also verified by the "6-T-*" on each aircraft), so the
caption for the photo could be: "Douglas TBD Devastators from Torpedo Squadron 6, USS Enterprise off Hawaii"