A B-25 Mitchell takes off from the flight line at Ellsworth Air Force Base, S.D., April 18, 2019. The B-25 was flown April 18, 1942, during the Doolittle Raid – a World War II operation to bomb Japan. The mission was the United States’ response to the attack on Pearl Harbor in Honolulu on Dec. 7, 1941. (U.S. Air Force photo by Airman 1st Class Thomas Karol)