Deputy Defense Secretary Bob Work holds a hyper velocity projectile at Naval Surface Warfare Center Dahlgren Division in Dahlgren, Va., as Adam Jones, a Dahlgren engineer, describes their uses, April 30, 2015. Deputy Defense Secretary Bob Work holds a hyper velocity projectile at Naval Surface Warfare Center Dahlgren Division in Dahlgren, Va., as Adam Jones, a Dahlgren engineer, describes their uses, April 30, 2015. SHARE: Download: Full Size (1.12 MB) Tags: Photo Essays Credit: VIRIN: 001457-Z-ZNN74-750.jpg Photo Gallery