Dustin Blosmo, the chief engineer with VRC Metal Systems, repairs the side of a Martin Marietta HGM-25A Titan I with a mobile Cold Spray machine in Dock 43 at Ellsworth Air Force Base, S.D., June 22, 2017. Cold Spray is a technology that accelerates small particles of the substrate [whatever the material is made out of] to achieve a mechanical bond upon impact restoring the part back to the original specifications. (U.S. Air Force photo by Airman 1st Class Donald C. Knechtel)