Moscone Bomb Threat
SFGate: Thousands of people were evacuated from San Francisco's Moscone Center on Wednesday, during Oracle and Seybold conventions, after someone threatened to blow up the building. No bomb was found.
The person, who authorities believe has made similar threats in the past, contacted the convention center about 1:20 p.m. saying a bomb had been hidden "in a dark place" and was due to go off in an hour.
OK, so why were we asked to leave at 3 p.m.?