Player Embed Code: Download Embed Share Top Marine Corps Officials Brief Media on COVID-19 Defense.gov March 26, 2020 | 27:52 Acting Navy Secretary Thomas B. Modly, Marine Corps Commandant Gen. David H. Berger, and Sgt. Maj. of the Marine Corps Troy E. Black brief reporters on the Marine Corps’ role in the Defense Department’s COVID-19 efforts at a Pentagon news conference, March 26, 2020.