while being more secretive than any other administration in recent history
I find this a bit amusing (sorry).
The NSA was formed in 1952. In June 1952 by President Harry S. Truman. Truman's Executive Order was itself classified and remained unknown to the public for more than a generation. The NSA for all its history, up to current has been almost the very definition of secret.
http://upload.wikimedia.org/wikipedia/en/7/73/NSAHQ.jpg"
The NSA, in combination with the equivalent agencies in the United Kingdom (Government Communications Headquarters), Canada (Communications Security Establishment), Australia (Defence Signals Directorate), and New Zealand (Government Communications Security Bureau), and otherwise known as the UKUSA group, is believed to be responsible for, the operation of the ECHELON system, formed to monitor the world's communications back when the Soviet Union was around. Its capabilities are suspected to include the ability to monitor a large proportion of the world's transmitted civilian telephone, fax and data traffic. Sugar Grove, West Virginia, intercepts all international communications entering the eastern U.S., while a site near Yakima, Washington intercepts traffic in the western U.S..
Technically, almost all modern telephone, internet, fax & satellite communications are exploitable due to recent advances in technology and the 'open air' nature of much of the radio communications around the world.
This has been going on since the
sixties.
ECHELON monitoring of mobile phones in Pakistan was reportedly used to track Khalid Shaikh Mohammed before he was arrested in Rawalpindi on March 1, 2003.
The NSA is believed to be the largest United States intelligence agency, with a staff of ~38,000. Despite being the world's largest single employer of Ph.D. mathematicians, the owner of the single largest group of supercomputers, and having a budget much larger than that of the CIA, it has had a remarkably low profile until... a few months ago. For a long time its existence was not even acknowledged by the US government. It is often half-jokingly said that "NSA" actually stands for "No Such Agency" or "Never Say Anything".
I also invite you to visit the NSA's website at http://www.nsa.gov/intro.htm Its quite fun to dress geek, go to Starbucks for free wireless in a public area, and have people think you're hacking into some secret government organization no body has heard of before (until a few months ago.)