Scrap the Air Force?

Not even on my worst days do I go as far as this guy:

At the moment, the Army, Navy and Marine Corps are at war, but the Air Force is not. This is not the fault of the Air Force: it is simply not structured to be in the fights in Iraq and Afghanistan. While Army, Marine and Navy personnel have borne the brunt of deployments, commonly serving multiple tours, the Air Force’s operational tempo remains comparatively comfortable. In 2007, only about 5 percent of the troops in Iraq were airmen.

Yes, air power is a critical component of America’s arsenal. But the Army, Navy and Marines already maintain air wings within their expeditionary units. The Air Force is increasingly a redundancy in structure and spending.