A U.S. Coast Guard HH-65C Dolphin crew member from Coast Guard Air Station Atlantic City preps his helicopter before an alert during a CrossTell training exercise at the Atlantic City International Airport, N.J., May 24, 2017. Air National units from New Jersey, South Carolina and Washington D.C. participated in training and familiarization exercises with the U.S. Coast Guard and Civil Air Patrol during the three-day CrossTell to increase awareness of the Aerospace Control Alert mission. (U.S. Air National Guard photo by Airman 1st Class Cristina J. Allen/Released)