HMH-466 (CH-53E) between October 2008 and May 2009 224th Aviation Regiment (UH-60A/L) between February 2006 and February 2007 attached to Marine Aircraft Group 16 327th Signal Battalion (United States) (Company A) between February 2005 and July 2005. VMGR-252 (KC-130J) between February 2005 and February 2006. Battery F (HIMARS), 2nd Battalion, 14th Marines between July 2007 and January 2008 3rd Battalion 24th Marines between September 2009 and April 2010 362d Expeditionary Reconnaissance Squadron between September 2011 and November 2011 MWSS-472(rein) from Sept 2004 to Feb 2005 and from Aug 2009 to Jan 2010 Intervention against ISIL When Marines with Special Purpose Marine Air-Ground Task Force - Crisis Response - Central Command returned in September 2014, Commanding Officer Colonel Jason Bohm said it was “like a scene out of the Twilight Zone. Our headquarters was a former Marine air logistics squadron headquarters. There were items that were just left there when we picked up and left. Literally newspapers with the date the last person that was in that office (departed are) still there, except there’s a lot of dust on it now.” In late October 2014, the airbase and surrounding region came under repeated attack by Islamic State (ISIL) militants. Fifty U.S. advisers were sent to the base. Also to conduct a site survey for U.S. advisers can use the installation to support the Iraqi military, said Navy Cmdr. Elissa Smith, a Defense Department spokeswoman. It now hosts 320 advisers. During the early morning hours of 14 December 2014, U.S. Marines hosted there allegedly clashed with ISIL alongside the Iraqi Army and Tribal Forces near Ayn al Asad base, west of Anbar, in an attempt to repel them from the base of which includes about 100 U.S. advisers in it at the time, when ISIL attempted to overrun the base. According to a field commander of the Iraqi Army in Anbar province, said that "the U.S. force equipped with light and medium weapons, supported by F-18, was able to inflict casualties against fighters of ISIL organization, and forced them to retreat from the al-Dolab area, which lies 10 kilometers from Ain al-Assad base." Sheikh Mahmud Nimrawi, a prominent tribal leader in the region, added that "U.S. forces intervened because of ISIL started to come near the base, which they are stationed in so out of self-defense," he responded, welcoming the U.S. intervention, and saying "which I hope will not be the last."