A fire monitor, used to fight potential shipboard fires, creates rainbows over the crowded Yellow Sea during a quarterly maintenance test aboard U.S. Coast Guard Cutter Bertholf (WMSL 750) May 31, 2019. Bertholf is engaged in a Western Pacific deployment in support of the U.S. Navy's 7th Fleet. U.S. Coast Guard photo by Chief Petty Officer John Masson.