A highly sought witness in the Benghazi investigation is scheduled to testify this morning behind closed doors in Congress, WND has learned Marine Col. George Bristol is considered a key witness because he may be able to shed light on why no U.S. military help was sent when the U.S. mission in Benghazi, Libya, came under attack on Sept. 11, 2012. The U.S. ambassador to Libya, Christopher Stevens, and three other Americans died in the attack. Congressional investigators have been trying to locate Bristol for months. As commander of Joint Special Operations Task Force-Trans Sahara, he knew what military options...