“Our commercial satellite network traffic is supported by a gateway in Tempe, Arizona, and we operate our satellite constellation from our satellite network operations center in Leesburg, Virginia.

We do not have a backup facility for our gateway, and both facilities are subject to the risk of significant malfunctions or catastrophic loss due to unanticipated events and would be difficult to replace or repair and could require substantial lead-time to do so.”

Iridium 10k filing in February 2015 to SEC:

ONE SYSTEM, GLOBALLY.