An F-16 from the Aerospace Control Alert Detachment from the 162nd Wing sits at the ready in a hangar at Davis-Monthan Air Force Base in Tucson, Arizona, Sept. 12, 2015. The detachment maintains the ability to quickly scramble in response to airborne threats in the Southwest United States, as well as proactively defend large gatherings and high profile events. (Air National Guard photo by Senior Airman David English)

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Photo by: Senior Airman David English |  VIRIN: 150913-Z-ZZ999-002.JPG