Player Embed Code: Download Embed Share 100-year-old Sentinel Visits Pentagon Defense.gov Oct. 25, 2019 | 1:42 Jack Eaton, a 100-year-old, WW II veteran who served as a tomb guard from 1938-1940, visits the Tomb of the Unknown Soldier at Arlington National Cemetery in Arlington, Va.Video by Marine Corps Sgt. Dylan Overbay, DOD