Master Chief Petty Officer Michael Perrault, a Coast Guard diver from Regional Dive Locker Pacific in Honolulu, tests communication equipment during Joint Exercise Black Drum in Panama City, Florida, May 14, 2018. The event consisted of multiple agency-led training exercises including post blast and underwater search and recovery scenarios, which allowed the different agencies to work together and learn from each other. (U.S. Coast Guard photo by Petty Officer 3rd Class Travis Magee/Released)