>> many in washington are saying the taliban prisoners are a risk of security. one terrorist vowed to return to the battle fold. one in three detainees released from gitmo are suspected of or" confirmed to return to the battle fold. >> reporter: alleged ring leader of a benghazi attack and commander in yemen and suicide bomber in iraq. they were in guantanamo and later returned to terrorism. >> the number is 29%. 16.6 percent confirmed and rest are suspected. >> reporter: the number is higher than one in throw. >> i am not surprised that certain detainees who are highly radicalized go back to the