[ Finally, the reactor cycles up to the critical threshold, and the pulsing stabilizes to a bright, steady white glow. Tony unhooks the power cable, and responds to David's retort with a shrug and a smirk. ]

Hey, you were the one complaining about it. I think it's cool.

[ Then there's a soft knock at the door, and Tony's attention becomes fully occupied by the arrival of his father. He breaks into a huge grin when Howard steps into the room. ]

Dad! You got here fast. We just got the reactor rebooted.