Three days passed before the records from his central operations were finally delivered to the backup site in Pennsylvania.

He says: I do fear these online backup sites.

He would fall back to one of the many national and international facilities he'd designated as backup sites.

After the last launch, the complex was retained as a backup site until the 1970s, in case a future missile needed to use it.

This type of backup site is the most expensive to operate.

Mount Graham, which the group said would be a backup site, is 10,709 feet high.

The backup site provides everything from computers to trading systems.

Others have backup sites in Singapore or other places outside the country.

It needs a backup site to handle extra capacity and in the event of terrorism.

"The pictures from the backup site will be ready in an hour."