200414-N-LI768-1014 PORT HUENEME, Calif. (April 14, 2020) Steelworker Constructionman Cody Mossow, assigned to Naval Mobile Construction Battalion (NMCB) 4, cuts out the inner layer of a 3-D printed face mask on Naval Base Ventura County. Personnel assigned to NMCB-4 are creating 3D-printed face masks to support COVID-19 relief efforts. (U.S. Navy photo by Construction Electrician Constructionmen Alexzander Petitt /Released)