Nick Fury: I gave you this detail so you could keep a close eye on things.
Clint Barton: Well I see better from a distance.
Nick Fury: Are you seeing anything that might set this thing off?
Clint Barton: No one's come or gone. And Selvig's clean. No contacts, IMs. If there was any tampering, sir, it wasn't at this end.
Nick Fury: At this end?
Clint Barton: Yeah. The Cube is a doorway to the other end of space, right? Doors open up both sides.
[on cue, the Tesseract activates and opens a portal, Loki steps through]
Nick Fury: Sir, please put down the spear.