Official Caption: "COAST GUARD CUTTER SINKS SUB: After blasting a U-Boat from beneath the surface of the Atlantic, then battering it with deck guns until it was ready to sink, Commander Harold S. Berdine, right, commanding officer of the U.S. Coast Guard Cutter SPENCER, takes time out to talk over the action with Captain Paul Heineman, USN, escort commander." Date: 17 April 1943 (Note on the back of the photo notes: "Not to be released for publication or announced to the public before 10:00 A.M. Eastern War-Time, June 2nd."); Photo No.: 1524 Photographer: Jack January Source - NARA Description: CAPT Heineman was the commanding officer of Escort Group A-3 that protected the convoy and he flew his flag from CGC Spencer.