Airman 1st Class Tyler Robinson, a power production journeyman assigned to the 28th Civil Engineer Squadron, helps install low-barring walls in a Habitat for Humanity home training in Rapid City, S.D., March 23, 2017. The 28th CES conducts monthly training with Habitat for Humanity to improve their construction skills, while also giving back to the local community. (U.S. Air Force photo by Airman 1st Class Donald C. Knechtel)