Osama Bin-Ladin's Satellite Phone was being monitored long before the 911 Attacks

To what extent was the NSA watching suspected terrorists prior to the 911 attacks...? According to former head of the CIA's Bin Laden unit Michael Scheuer, "Osama Bin Ladin's Inmarsat Satellite phone was a Godsend, it gave us an idea of not only where he was in Afghanistan, but where his Al Qaeda Organization was located."

By putting together thousands of now 'unclassified' documents and public records we can piece together the NSA's role prior to 911.  In November 1996, a known Al-Qaeda operative bought an Inmarsat Satellite phone from a store near New York City; that phone was for Osama Bin Ladin--once he started dialing from Afghanistan--the NSA's listening posts quickly tapped into his conversations...his Inmarsat phone would transmit a signal straight to a satellite orbitting over the Indian Ocean...the tracking also enabled investigators to get his phone number, which allowed them to monitor both sides of the conversations.

We now know that Bin Ladin had gone 'dark' years before he was caught; hiding in a compound in Pakistan that had no internet or landline phone--which explains why it took investigators so long to track him down...in a carefully planned raid by Navy Seals in 2011.