US Army lands A-10 Warthog on Michigan Highway
Operation Northern Strike
The US Army tests unit readiness for operations in an “austere environment” meaning they do not have prepared runways. In the United States the Eisenhower Interstate System is designed to for just this sort of operations. For more information on the make up of the US interstate system you can find out more from the Dwight D. Eisenhower presidential library directly at the following link HERE.
The link is from the Military Times article by James R. Webb, which you can find HERE. This is an excellent operational example of one reason why a foreign invader on American soil would have a very difficult time trying to invade.