MASS-3 returned to Iraq with the 1st Marine Division to provide air support in January 2004. They were based out of Camp Blue Diamond in Ramadi and were replaced in January 2005 by MASS-1. The DASC moved to Camp Fallujah near the city of Fallujah in January 2006 around the same time that MASS-3 returned to Iraq to retake the air support mission in Al Anbar Province. MASS-1 again switched out with MASS-3 in early 2007 and provided air support for the 2nd Marine Division.