Fired shell casings lay around an M16 rifle after a live-fire exercise during annual training on Fort Drum, N.Y., July 16, 2015. Fired shell casings lay around an M16 rifle after a live-fire exercise during annual training on Fort Drum, N.Y., July 16, 2015. SHARE: Download: Full Size (2.074507 MB) Tags: Photo Essays Credit: VIRIN: 500442-Z-GOF16-973.jpg Photo Gallery