U.S. Coast Guard Petty Officer 3rd Class Antonio Thornton flexes after successfully donning a protective suit in the hangar of USCGC Thetis (WMEC 910) in San Juan, Puerto Rico, on Dec. 7, 2021. Lt. j. g. Peyton Henderson provided training for defending against chemical, biological, radiological, and nuclear threats to all necessary Thetis crew members for an upcoming patrol off Atlantic Africa. (U.S. Coast Guard photo by Petty Officer 3rd Class John Hightower)