The stage is a small airfield with several African men, presumably mercenaries, watching the fight. At the end of each round, the spectators will fire machine guns into the air. A large cargo plane will roll into the stage, and its left wing will enter the fight area, where it can be broken off by an airborne attack.
The aircraft featured in the background is a two engine version of the Boeing C-17 Globemaster III with S.I.N. markings on it.