MILITARY TIMES 3 Hours Ago Despite Pentagon claims, Marine colonel sought in Benghazi investigation not yet retired by Dan Lamothe When insurgents attacked the U.S. diplomatic compound in Benghazi, Libya, last fall, Col. George Bristol held a key post in the region. As commander of Joint Special Operations Task Force-Trans Sahara, he was in a position to know what options the U.S. had to protect Americans under fire. U.S. Ambassador Chris Stevens and three other Americans died in the Sept. 11 attacks, sparking national outcry and a congressional investigation examining the lack of protection. Several U.S. officials have testified before Congress since — but not Bristol, a salty Marine whose task force was responsible for special operations in northern and western Africa. Defense Department officials have told members of Congress that Bristol cannot be forced to testify because he retired after stepping down during a March change of command ceremony, according to several medi...