The @Uverse twitter feed is filled with apologies. Example:
AT&T U-verse @Uverse
@WellsDunbar We’re investigating why this occurred and working toward a resolution. We apologize for the inconvenience this morning.
There was an incident in the early 70’s where an EBS alert mistakenly went out from the Strategic Air Command instead of a test.
There is audio on the internet of an announcer at WOWO in Fort Wayne breaking into programming and crapping his pants for seven minutes until the correction message comes through.