Coast Guard Petty Officers 2nd Class April Cook and Lawrence Mouton, aircrew members at Air Station Elizabeth City, North Carolina, practice using the electronic sensor on board an MH-60 Jayhawk helicopter during a training flight along North Carolina’s coast, Dec. 7, 2018. Cook and Mouton ensured that the sensor was functioning properly by repeatedly bouncing a signal off a nearby water tower. (U.S. Coast Guard photo by Petty Officer 2nd Class Corinne Zilnicki/Released)