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21st Space Wing celebrates Arbor Day
Lt. Col. John Koehler, 10th Space Warning Squadron commander, participates in the Tree City U.S.A. presentation at Cavalier Air Force Station, N.D. on June 3, 2016. The installation celebrated Arbor Day by planting trees and flowers, had a site picnic and recognizing the importance of being “green.” (Courtesy photo)

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Photo by: U.S. Air Force photo |  VIRIN: 160603-F-ZZ999-002.JPG

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