U.S. Coast Guard Chief Petty Officer Patrick Coppo, an independent duty health services technician, instructs enlisted members in health and safety practices while on the messdeck of the USCGC Stone (WMSL 758)aboard the Caribbean Sea on Jan. 6, 2021. Coppo taught on subjects such as hearing and sight conservation, respiratory protection, and personal hygiene. (U.S. Coast Guard photo by Petty Officer 3rd Class John Hightower)