John Dawson
- electric guitar (rhythm), vocals
David Nelson
- electric guitar (lead), vocals
David Torbert
- electric bass, vocals
Jerry Garcia
- pedal steel guitar
Spencer Dryden
- drums
The U.S. Emergency Broadcast System sends an erroneous warning across the nation's radio and television stations, meant to be a standard weekly test conducted by NORAD in Cheyenne Mountain in Colorado. Some stations cease broadcasting until the message is rescinded, as required by federal rules, while most ignore it.