Petty Officer 1st Class Krystyna Duffy, a boatswain's mate at Coast Guard Station Golden Gate, smiles after receiving the surfman designation during a ceremony at the station in Sausalito, California, March 9, 2018. Duffy is the fourth active female surfman in the service, a title that dates back more than 200 years to the U.S. Life-Saving Service. (U.S. Coast Guard photo by Petty Officer 2nd Class Cory J. Mendenhall/Released)