Oh, this is going to be fun. We’re a couple of months out, and we’ve finally gotten the first footage of Tom Ellis and Nick Gehlfuss as partners in the new FBI offshoot, CIA. On Monday, December 15, CBS released the trailer for the new drama, premiering on Monday, February 23, at 10/9c, after FBI Season 8’s winter return. The new video, which you can watch above, introduces us to Ellis and Gehlfuss’ characters and their partnership — and highlights just why their differences are going to make for an entertaining duo. In the new series, by-the-book FBI Special Agent Bill Goodman (Nick Gehlfuss) is assigned to a clandestine CIA/FBI…