Benghazi Colonel says support in army allowed US consulate attack

The US Ambassador to Libya, Chris Stevens, died after an attack on the consulate in Benghazi by up to a hundred people. How was it possible to attack the diplomatic mission? Colonel Mohammed Abdulrahim Saber who serves in Libya's army and is based in Benghazi told David Whitty that the attackers were able to break into the US consulate because of support within the parts of the army.