Continental air defense using fighters, dedicated interceptors (both endo and exo atmospheric), surface to air missiles, or strategic grade special weapon installations.
Strategic strikes against hostile nation states, organizations, or single actors utilizing either long range fixed wing craft, surface to surface weapon systems, or stand off air launched munitions.
Strategic global transport of its own logistical needs and those of other United States military branches and civil entities when needed. Typically employing rotary, fixed wing, or the recently arriving gravitic repulsion platforms derived from new technologies.
On demand sub-orbital intelligence gathering via ELINT, photo reconnaissance, or IWAR platforms, often of the hypersonic variety.