Check out this article, an AP dispatch in Military.com, that candidly describes the present status of US air support of Iraqi operations. Bottom line: There's no way, not for years, that we'll turn over control of air support to Iraqis because there's no assurance they won't use airstrikes to settle old tribal scores. It'll take years to train them, and training hasn't even been started yet.
Another fact, quite revealing of the massive scope of the US military activity in Iraq. At just one airbase, in Balad, the Air Force launches 27,500 airplanes a month. That's 900 per day, forty per hour, almost one per minute, 24/7. Now for years I lived in Tucson, with the huge airbase, Davis-Monthan, nearby, and it launched perhaps one airplane per hour--and that noise was oppressive. Imagine, with scores of additional bases in and around Iraq, the enormity of the military might we're expending in that sad, ugly war.