Yes, and our Department of Defense has been handling that mission nicely for many years.
And we don't need a wasteful, politically-corrupt, feel-good, civilian job-creation agency like NASA to do it.
NASA has provided some interesting knowledge and entertainment (admit it, that's the attraction) over the years, but its time has come and gone.
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From where I stand, the same thing can be said of the DoD.
Right now, I can think of several project that I have been involved with that had both NASA and DoD involvement (In the interest of full disclosure, I work for a small aerospace firm, so I am biased on this issue). There are some things that can get funded better by one agency vs. the other, but there is a certain amount of exchange between the agencies.
Could this be done better if it was all DoD? Perhaps, but there would be the appearance that all we were doing was militarizing space. That is not an easy sell to everyone, and would have been an even harder sell in the 1960's.