 Complete the following phrase:  Individual battalions of the 2nd Marines have participated in stability and security operations in Iraq and Afghanistan on a seven-month rotating basis. The most notable actions in Iraq occurred in the Sunni stronghold of Al Anbar province during the battles for Fallujah during which the 2nd Battalion 2nd Marines was attached to the 1st Marine Regiment in 2004 to participate in Operation Vigilant Resolve and 