Coast Guard Petty Officer 2nd Class April Cook, an avionics electrical technician at Air Station Elizabeth City, North Carolina, helps a fellow crew member calibrate the electronic sensor on board an MH-60 Jayhawk helicopter during a training flight along North Carolina’s coast, Dec. 7, 2018. Aircrews routinely hone their skills using various sensors and equipment on board the air station’s helicopters. (U.S. Coast Guard photo by Petty Officer 2nd Class Corinne Zilnicki/Released)