Maintainers from the Colombian air force use a hoist to move the main rotor blade for the Colombian air force Bell 212 helicopter in place on the aircraft in preparation for Exercise ANGEL THUNDER at Davis-Monthan AFB, Ariz., April 29, 2014. Exercise ANGEL THUNDER is an annual exercise that supports the DOD's training requirements for personnel recovery, but also fosters relationships between joint, interagency, and coalition partners. This year's exercise will occur from May 4-17 throughout Arizona and off the coast of California. The Colombian military is one of the largest international participants of this year’s Exercise ANGEL THUNDER. (U.S. Air Force photo by Staff Sgt. Heather R. Redman/Released)