Secretary Cohen escorts Vice Minister of Defense Tran Hanh into the Pentagon. Secretary of Defense William S. Cohen (right) escorts Vice Minister of Defense Tran Hanh (left), of the Socialist Republic of Vietnam, through an armed forces honor cordon into the Pentagon on Oct. 5, 1998. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 878361-Q-FFV41-067.jpg Photo Gallery