"At this time, we don't know what caused the fire, " Joyce said.

CNN: fire

Surely this isn't going to be a repeat of the Windsor Castle fire in 1992 we thought -- and over the jubilee weekend as well?

CNN: STORY HIGHLIGHTS

We don't like having this investment, but we're not going to sell it at a fire sale.

WHITEHOUSE: Press Briefing

'Course, industry analysts are suggesting that regulators wouldn't really go through with shutting it down, but if nothing else, this should light a fire under Sprint to expedite the process.

ENGADGET: Regulators put pressure on Sprint to remedy issues with iDEN network

The heat came early this year, but it isn't uncommon for Montana temperatures to swing wildly, said Great Falls Fire Chief Randall McCamley.

CNN: Northwest heat endangers crops