[Carry_Okie]

The Army has traditionally had the tasking of coastal defense of the country and in the modern era they operated the anti-aircraft missiles along with artillery.

That's a little too "traditional" for my taste given that the USAF has the task of managing air space for ICBMs and aircraft.

They sold the program as a defensive extension of the Coast Artillery and not as an offensive weapon for foreign war.

In the valley below me is a road that was paved in 1919 with 5" of heavily reinforced concrete on the excuse that the Army would use it for transporting artillery to the coast, which they did once a year. It was pure pork.

[usurper]

That's a little too "traditional" for my taste given that the USAF has the task of managing air space for ICBMs and aircraft.

My understanding is that DHS which includes the Cost Guard and Customs and Border Protection aircraft are responsible for air space protection bellow either 50K or 60K I can't remember which.

The USAF is responsible for all fast movers above commercial altitude. They all share the same radar feeds from the FAA and other platforms.

DHS has been using Aerostats along the southern border for decades with mixed results.