The command and control computer has transitioned from the primary computer to a backup computer. As it transitioned, it shut down power to some of the systems, much like a circuit breaker does. Power has been restored. Mission Control has asked spacewalkers Garrett Reisman and Steve Bowen to resume their tasks. Reisman will unbolt the new space-to-ground antenna dish from its current location so they can move it to its permanent location on the Z1 truss.