200428-N-GT085-1004 WASHINGTON (April 28, 2020) A flyer announcing a joint flight demonstration by the U.S. Navy Blue Angels and the U.S. Air Force Thunderbirds over Baltimore, Atlanta and Washington, D.C. on May 2 to salute and thank healthcare workers and other essential personnel serving on the front lines against COVID-19. (U.S. Navy graphic by Seaman Apprentice Katryn Kroeker/Released)