U.S. Army Gen. Colin Powell, chairman of the Joint Chiefs of Staff, speaks via satellite to the Pentagon while visiting troops during Operation Desert Shield. U.S. Army Gen. Colin Powell, chairman of the Joint Chiefs of Staff, speaks via satellite to the Pentagon while visiting troops during Operation Desert Shield. SHARE: Download: Full Size (2.68 MB) Tags: Photo Essays Credit: VIRIN: 577949-B-KJA01-000.jpg Photo Gallery