Travel has been going on for a very long time. Also at this moment!
But only in the form of a paranormalmateria (fifth dimension)
Perhaps I have the happiness and the knowledge that I can deliberately move around the Paranormalmateria.
Desires, for the very meaning of the journey, differ in these two dimensions.
It's actually a smart idea. We already have a second space program run by the USAF. We already have the Space Command within the USAF. Then there is the National Reconnaissance Office overseeing most of the intelligence assets in space. Putting those things into a single fifth branch of the DoD would make a lot of sense, financially and operationally.