 The B-24 passed "U-965" two miles astern trying to come in on a favorable approach on her starboard beam.As the Liberator approached "U-965"s 37mm AA gun jammed on the first round and the bomber was able to hit both men, with machine gun fire, manning the twin 20mm AA gun on the port side.However, the lock-select lever on the B-24 had not been fully engaged which caused the depth charges to not release over "U-965"s stern as intended.