In another twelve hours, he'd have had someone very suspicious to point Damon at. As it is, things are still tranquil and normal, rainbow skies aside!

"Don't neglect to stop by headquarters. There's probably some new gadget or something waiting for you." Research and development teams lived and breathed helping their heros out! Had things gone a little differently, he himself would be there with them.. but it isn't to be, even in an illusion.

There should be a 'stay safe' or something added to it, but who is he kidding? Of the two of them, it's the hero that's less in danger, Damon would be fine. "Be seeing you." Or. Or not, honestly-- that was the point of invisibility.