File:Q4.png Air Defense Bunker is the 1st Level in Quake 4. Revolving around the start of the battle of Stroggos. The U.S.S. Patton-class cruisers are intercepted by Strogg defenses. Rhino Squad flies down to the planet, but is shot down. Matthew Kane awakes in the dropship unconscious. The rest of Rhino Squad is scattered, and Kane fights alongside members from other squads. Hope to get back on his squad.