Sunset Shot Reenactors with the 6th New York Light Artillery fire a Civil War-era cannon at dusk during the 153rd anniversary of the Battle of Gettysburg in Gettysburg, Pa., July 2, 2016. The reenactors included veterans from the Army, Navy, Marines and Army National Guard. Air National Guard photo by Staff Sgt. Christopher S. Muncy SHARE: Download: Full Size (1.68 MB) Credit: Staff Sgt. Christopher S. Muncy VIRIN: 160704-D-XT155-002.JPG Photo Gallery