Light show
Katie Stephens aligns a projectile with a laser at the Arnold Engineering Development Center's large Hypervelocity Ballistic Range G facility at Arnold Air Force Base, Tenn. The laser assesses the condition of a projectile during a specific stage of flight. The Range G launcher is the largest, two-stage, light-gas gun system in the United States that can launch extremely high-fidelity missile simulations at hypervelocity speeds. Ms. Stephens is an optical diagnostics group engineer with Aerospace Testing Alliance's technology and analysis branch. (U.S. Air Force photo/Rick Goodfriend)