Fermi would have answered his own question -- "Where are they?" -- today

Fermi would have answered his own question -- " Where are they?" -- in the 21st century. Observing today's communications he would have understood that with the communications of the 22nd, when we might be capable of some form of interstellar flight, we would have absolutely no reason to travel.

We will be able to just "fax" the DNA of a Tyrannosaurus Rex to them and they will "fax" the DNA of one of their prehistoric species to us -- and right here on earth we will be able to set up fights to the death -- with legal parimutuel betting that could bring revenue for local governments of course. :-)