Air Force Staff Sgt. Danielle Nehs cuts lumber for piping support in the crawl space under a hogan during the Innovative Readiness Training's St. Michael's project near Window Rock, Ariz., July 9, 2013. Nehs is a Colorado Guardsman assigned to the 140th Civil Engineering Squadron. Air Force Staff Sgt. Danielle Nehs cuts lumber for piping support in the crawl space under a hogan during the Innovative Readiness Training's St. Michael's project near Window Rock, Ariz., July 9, 2013. Nehs is a Colorado Guardsman assigned to the 140th Civil Engineering Squadron. SHARE: Download: Full Size (2.62 MB) Tags: Photo Essays Credit: VIRIN: 902320-N-CMQ30-718.jpg Photo Gallery