Mask Manipulation Army Sgt. Joseph A. Bercovic adjusts a breathing apparatus during an Army North-mandated training proficiency evaluation at the Veterans Affairs Medical Center-Lyons in Lyons, N.J., Oct. 25, 2017. Bercovic is assigned to the 21st Weapons of Mass Destruction-Civil Support Team, New Jersey National Guard. New Jersey National Guard photo by Mark C. Olsen SHARE IMAGE: Download Image: Full Size (1.79 MB) Photo By: Master Sgt. Mark Olsen VIRIN: 171025-Z-AL508-0282Y.JPG Photo Gallery