This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
USS Norris DD drops depth charges in April . The Navy destroyer USS Norris DD drops depth charges in demonstration of antisubmarine warfare ASW for the Secretary of the Navy Francis Matthews who was embarked in the aircraft carrier USS Philippine Sea CV on April Official Navy photo history navy mil html from the Navy history