For the first time ever, the Air Force is preparing to fight an enemy on American soil. From the US Air Force:

Three units representing each component of the Air Force made history here May 16 through 23 when they successfully completed the first homeland defense operational readiness inspection.

The ORI, held at the Gulfport Combat Readiness Training Center here, was administered by the Air Mobility Command Inspector General on a trial basis, but it may help pave the way for future inspections, officials said.

"For the very first time, the U.S. Air Force has validated a unit's wartime capability to defend the homeland by fighting an enemy right here on U.S. soil," said Col. Greg Nelson, the commander of the Kentucky Air National Guard's 123rd Airlift Wing, which served as the lead organization for the ORI. (emphasis added)