Fox News has learned from sources who were on the ground in Benghazi that an urgent request from the CIA annex for military back-up during the attack on the U.S. consulate and subsequent attack several hours later was denied by U.S. officials — who also told the CIA operators twice to \stand down\ rather than help the ambassador's team when shots were heard at approximately 9:40 p.m. in Benghazi on Sept. 11.\n\nFormer Navy SEAL Tyrone Woods was part of a small team who was at the CIA annex about a mile from the U.S. consulate where Ambassador Chris Stevens and his team came under attack. When he and others heard the shots fired