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According to AFDD 3-01, Counterair Operations, "Control of the air is normally one of the first priorities of the joint force.
Higher headquarters concluded that P-51-equipped units in the future would focus on higher-altitude counterair operations.
Obviously as well (and by some standards anachronistic if anyone ever thought about it), Air Force fighters cannot conduct counterair operations at anywhere near the same intercontinental ranges at which bombers and transports operate--a clear contrast to the Navy's capability.
Like counterair operations, counterspace operations have offensive and defensive components.
Space Superiority Just as we gain and maintain air superiority through offensive and defensive counterair operations, so do we achieve space superiority through offensive and defensive counterspace operations.