After an availability at the New York Navy Yard, she escorted one additional convoy to England between 12 and 23 May, and remained in the British Isles with the naval forces gathering for the cross-channel invasion of France. Instead of supporting the landings on Normandy's beaches, however, "Bull" joined the escort of a convoy back to the United States. "Bull" escorted one more convoy to England and then returned to the United States with TG 21.9 in July. On 24 July 1944, while en route to New York, the destroyer escort picked up what she interpreted as submarine noises and promptly sent depth charges and hedgehog projectiles into the depths from which the sounds had come. No evidence of a "kill" appeared after the attack, so the destroyer escort rejoined her charges and reached New York with them on 27 July.