180327-M-AF202-0030 CHERRY POINT, N.C. (March 27, 2018) Senior Chief Todd Lepsch, left, teaches a class on the A/P22P-14 chemical-biological aviation mask to Marines assigned to the 2nd Marine Aircraft Wing at Marine Corps Air Station Cherry Point, N.C. Personnel with Naval Air Systems Command conducted a three-day course on Cherry Point to educate Marines on different types of chemical, biological, radiological and nuclear defense equipment utilized for aviation applications. (U.S. Marine Corps photo by Cpl. Koby I. Saunders/Released)