That would depend on the situation. Anybody could receive air support in a tough firefight. But if the air is swarming with enemies and air support is impossible because of it. All hopes are lost. The enemy is gonna win. Then suddenly BAM! Random [s]RKO[/s] EMP OUTTA NOWHERE! The enemy aircraft all drop from the sky and your gunship flies in, clears the field and saves the team despite the fact that his vehicle should have been affected by the EMP as well. <-- That is a Deus Ex Machina.