200413-N-TP832-1054 PORT HUENEME, Calif. (April 13, 2020) A 3-D printer prints face mask frames on Naval Base Ventura County, Port Hueneme. Personnel assigned to Naval Facilities Engineering and Expeditionary Warfare Center, Naval Construction Group 1, NMCB-3 and NMCB-4 are creating 3-D-printed face masks to support the hospital ship USNS Mercy’s (T-AH 19) COVID-19 relief efforts. (U.S. Navy photo by Mass Communication Specialist 2nd Class Michael Lopez/Released)