Well, this is news to me.
Childress appears weekly on a program called Ancient Aliens, where he speaks repeatedly of "the extraterrestrials." Here he is on October 26, 2011 asking how prehistoric people could resurrect the dead: "What kind of powers would you have to have to do that? The powers of an extraterrestrial?” Here he is again on September 27, 2011, speaking of Greco-Roman technology: "Ancient lasers were probably being used, and that technology probably came from extraterrestrials.” These are the first two quotes I pulled. I could easily fill a blog post just with Childress talking about "the extraterrestrials" he once again claims not to believe in.
No, he never advocates alien intervention.