U.S. Army Sgt. Cory Sweetman radios back to an operations center during an exercise at Atlantic City International Airport, N.J., Nov. 7, 2018. Sweetman is with the 21st Weapons of Mass Destruction-Civil Support Team (21st WMD-CST), New Jersey National Guard.


U.S. Air National Guard photo by Master Sgt. Matt Hecht


Watch how U.S. troops train to operate after a nuclear, chemical, or biological attack below: