In the video there are statements read by terrorists in Arabic ( PDF English translation via Global Terror Alert). After they read the statements they then point at a map of what appears to be the area around the mess tent with a combat knife. The terrorists then hug and what appears to be the mess tent is shown and then smoke rises and a boom is heard. At the end of the tape they drive by showing the hole in the roof of the tent.

You can get the video here (5.5 Meg .wmv file -- right click and save) courtesy of Northeast Intelligence Network

Hyscience has more on the lax security and "inside job" angles that may have allowed the attack.

Chad at In The Bullpen has more on the attack and the initial speculation on the attacker

The Army of Ansar al-Sunnah is responsible for numerous vicious acts in Iraq. Below are other Diggers Realm coverage of The Army of Ansar al-Sunnah

Dec. 13 - Army of Ansar al-Sunnah Releases Video Of Turkish Hostage [ Video ]

Nov. 20 - Army of Ansar al-Sunnah Releases Execution Video

Oct. 28 - Eleven Iraqi Hostages Executed, One Beheaded In Video Released By Army of Ansar al-Sunnah

Oct. 26 - Army of Ansar al-Sunnah Releases Video Of 11 Iraqi Hostages [ Update ]

Oct. 15 - Turkish Truck Driver Beheaded

Oct. 2 - Iraqi Hostage Barie Nafie Dawoud Ibrahim Beheaded By Terrorists