Petty Officer 2nd Class Mark Rivas, a machinery technician aboard USCGC Kukui (WLB 203), conducts a review of signaling flags before conducting a fire fighting drill March 18, 2016. The crew of Kukui conducts training to ensure proficiency in an actual emergency and utilizes signal flags to communicate the simulated emergency. (U.S. Coast Guard photo by Petty Officer 2nd Class Melissa E. McKenzie/Released)