Airmen and students at Edgren High School stand for the singing of the national anthems at Misawa Air Base, Japan, Jan. 15, 2016. The three-hour event consisted of a luncheon, observance march and assembly held at Edgren High School in honor of Martin Luther King, Jr. The campaign for a federal holiday in King's honor began soon after his assassination in 1968. President Ronald Reagan signed the holiday into law in 1983, and it was first observed three years later. (U.S. Air Force photos by Senior Airman Brittany A. Chase)