620 ILCS 10/1
For the purposes of this Act a "military emergency" exists when: (a) The President proclaims that a state of war exists; (b) Congress declares that a state of war exists; (c) a directive that a military emergency exists is issued by the Joint Chiefs of Staff; (d) a declaration that a military emergency exists is issued by the Commanding General, Air Defense Command, because intelligence indicates that a hostile attack on the continental limits of the United States is imminent; or (e) there is an enemy attack upon the continental United States.
As used in this Act "non-scheduled civil aircraft" means all civil aircraft except civil aircraft operated by a public air carrier certificated by the federal governmental agency which has statutory regulatory authority over interstate air transportation to engage and operate in the transportation of persons and property on a regularly scheduled basis.
"Department" means the Department of Transportation of this State.
620 ILCS 10/1