U.S. Army Capt. Octavia Blackwell, Delta 1-222 Aviation Battalion commander, speaks at a ceremony honoring the life and legacy of Dr. Martin Luther King Jr. at Joint Base Langley-Eustis, Virginia, Jan. 15, 2019. The theme for Dr. Martin Luther King Jr. day is “A day on, not a day off.” (U.S. Air Force photo by Senior Airman Derek Seifert)