Getting up onto the ledge where the window was would have been easy, if not for the fact that maybe the two of them hadn't done this in awhile. Well, the last time Owen had used a grappling hook wasn't anytime soon. It must have been at least a few months, but the basic hand movements where there.
Grab a hold and start climbing up.
"Hey, Colin, you know, next time, before we have to go and rescue someone with the rest of the Justice League crew, I think you should take me out to dinner," He grunted as he finally pulled himself up, steadying himself as he hauled himself over onto the ledge. Once there, he waited to see what was happening.
He heard Jen though, and as soon as he heard her voice, he moved his sleeve down to cover his fist and punched out the glass.