Barksdale B-52s launch in support of "Polar Growl" mission
In support of a long-range mission to the Arctic and North Sea regions, aircrews from the 2nd and 307th Bomb Wings board a bus that will take them to their B-52H Stratofortress aircraft on Barksdale Air Force Base, La., April 1, 2015. Called "Polar Growl," the mission will help ensure the bomber crews maintain a high state of readiness and proficiency and demonstrate their ability to provide a flexible and always-ready, global-strike capability. (U.S. Air Force photo/Airman 1st Class Curt Beach)