U.S. Army Maj. (Retired) Rick Marshall and U.S. Army Command Sgt. Maj. (Retired) William Kenyon pose for a photograph at the start of the Pacific Crest Trail in Campo, California, April 17, 2021, left, and pose for a photo at the end of the trail at the U.S. and Canadian border in Washington, Sept. 17, 2021, right. (Courtesy photo by Rick Marshall)