At 8:52 p.m. EDT (7:52 p.m. CDT), programming was interrupted. A CBS News Special Report graphic appears for two seconds; the picture then cuts to Morton Dean, the CBS Evening News weekend anchorman. Dean sat at the desk he usually did the weekend newscasts from. MORTON DEAN: Good evening. This is Morton Dean in New York. CBS News has just learned of a matter of extremely grave national importance and we are now going live to the White House. UNKNOWN: Morton!...Morton!...you're on! MORTON! YOU'RE ON!...MORTON!.. (Dean clears his throat, wipes his eyes)