It's a dirty job
MCGHEE TYSON AIR NATIONAL GUARD BASE, Tenn. - The TEC celebrates 2015 in photos. A construction crew member pushes dirt towards the retaining wall at the facility construction site here Apr. 29, 2015 at the I.G. Brown Training and Education Center. An estimated 50 dump truck loads of dirt and gravel were needed to fill in the excavated area. (U.S. Air National Guard photo illustration/Released)