Secretary of the Army John McHugh accompanies Arlington National Cemetery chief engineer Col. Michelle Stewart as she bears the torch to relight President John F. Kennedy's Eternal Flame, Oct. 29, 2013. Stewart was charged with the overhaul of the permanent Eternal Flame, which included the installation of a new burner assembly and supporting infrastructure. Gas, electric and compressed air lines were also upgraded. (U.S. Army photo by J.D. Leipold/Released)