Ironside Season 7 Episode 5

Whitney: (to Clausen after *Hobart* Red Alert Go *SAC 4A* is launched) Now comes the tough part. If the code checks out they send out for another verification.
Ironside: And you've got to cancel out before it reaches SAC verification yourself.
Geller: Curtis what are you doing?
Clausen: (aiming a gun at them) Just keep going Doctor, man like you can't quit until he has his final proof.

(Computer screen: *SAC Sector 4A* Verification Request - Verification Red Alert _ Launch Code (1) 111 (2) 222 (4) 444 (6) 666 (8) 888 (10) 10 10 10 (12) 12 12 12 (14) 14 14 14 (16) 16 16 16)

Ironside: Better hurry Dr. Whitney, speed is what counts right. At first Dr. Whitney it didn't compute, why did Brandon want out of his study, why put him out of circulation? Afterall, everything was the way it's always been.
Whitney: But it wasn't.
Ironside: No you were different. You and that hidden ball you asked Brandon to develop. The technique was clean and perfect. You could block electronic messages of all kinds, not just television. Let's say a man wants control of the doomsday button, you tie in your own computer while pretending to do a study of the missile base. You send out a firing order. When the base requests a verification from SAC you intercept it and cancel it out with your bouncing ball.
Whitney: There's more to it than that.
Ironside: But I've got the basics.