Live Fire Army Staff Sgt. Spencer Nichols fires a .50-caliber machine gun during a live-fire gunnery exercise aboard the guided missile destroyer USS Donald Cook in the Mediterranean Sea, Jan. 14, 2019. SHARE: Download: Full Size (1.41 MB) Tags: Army Credit: Navy Petty Officer 2nd Class Ford Williams VIRIN: 190114-N-JI086-334.JPG Photo Gallery