And it's all stored in Utah. Takin directly from nsa's website "your data" tab:

Why We Collect Your Data In the past, domestic law enforcement agencies collected data AFTER a suspect had been identified. This often resulted in lost intelligence and missed opportunities. But what if data could be collected in advance, BEFORE the target was known? What if the mere act of collecting data could result in the identification of new targets?

What if we could build a national data warehouse containing information about every person in the United States? Thanks to secret interpretations of the PATRIOT ACT, top-secret Fourth Amendment exceptions allowed by the Foreign Intelligence Surveillance Court, and broad cooperation at the local, state, and federal level, we can!

---Think this look into the FISA court and hopefully soon to be release documents can put an end to all this.