Air crews from the 37th Bomb Squadron perform pre-flight checks as a B-1 bomber thunders overhead during an Operational Readiness Exercise on Ellsworth Air Force Base, S.D., Feb. 23, 2012. B-1B missions were conducted during the ORE that tested the base's ability to rapidly mobilize and process assets during wartime contingencies.
Airman 1st Class Zachary Hada
<a rel="nofollow" class="external free" href="https://www.dvidshub.net/image/534049">https://www.dvidshub.net/image/534049</a>