Ground personnel of the 305th Bomb Group conduct maintenance work on the engines of a B-17 Flying Fortress (serial number 41-24615) nicknamed "Target For Tonite". Image stamped on reverse: 'Not to be published.' [stamp], 'Ministry of information 20 Jun 1943.' [stamp] and '272225.' [Censor no.] Printed caption on reverse: .'AT A FORTRESS STATION IN BRITAIN. From an American Base in Britain the Flying Fortresses cary out operational activities which result in terrible blows against the German industrial war machine . This series of pictures shows scenes at a Flying Fortresses station where huge bombers take off for the raids or return from missions to be serviced by the ground crews, ready for the next raid. Keystone photo shows: US Army Air Force Ground Crews servicing Flying Fortress. U.S. Pool/ F. KEYSTONE 19-22'