He knew they were under attack during a meeting at about 5pm, then according to Panetta, he had no more communication with Obama while Americans including an ambassador were being murdered by Al Qaeda. He needs to be impeached.
Think about it. Obama denied 30+ Americans fighter jet support in Benghazi. If not for a few brave Navy SEALs, they would have all been captured, raped, tortured, and beheaded by Al Qaeda.