A tank crew with the Company D, 1st Battalion, 5th Cavalry Regiment “Black Knights,” 2nd Brigade Combat Team, 1st Cavalry Division, fires a 120mm round to verify the main gun is zeroed during gunnery tables I –IV on a range here Oct. 2. Tables I-IV are the foundation for crew qualification and include learning fire commands, dry-fire rehearsals, weapons familiarization and bore sighting, zeroing the 120mm main gun, said Sgt. 1st Class Peter Wallat, platoon sergeant with Company D, Black Knights. (U.S. Army photo by Sgt. Quentin Johnson, 2nd BCT PAO/Released)