Kathleen Ferguson, principal deputy assistant secretary of the Air Force for installations, environment and energy signs a declaration of support during a ceremony celebrating the Grand Sky Enhanced Use Lease project Feb. 18, 2015, at Grand Forks Air Force Base, North Dakota. The long-term business partnership is expected to generate revenue for both the local Air Force base and the regional economy. The signing of the EUL agreement allows for the development of Grand Sky, an unmanned aerial systems technology and business park run by Grand Forks County, on Air Force property. (U.S. Air Force photo/Senior Airman Xavier Navarro)