From the source:
Mineman Second Class Franklin Marshall, a Navy Explosive Ordnance Disposal Team member, conducts a search for mines, especially those attached to ship’s hulls, circa April 1966. The E.O.D. Team is responsible for harbor security. Several merchant ships are in the distance. Photographed by Ernie Filtz. Official U.S. Navy Photograph, now in the collections of the U.S. National Archives.