The National Security Agency (NSA) is primarily responsible for Signals Intelligence (SIGINT) and Information Security (INFOSEC)...in other words,
intercepting electronic communication like radio, cellular phone, etc. and computer-related information gathering, including encoding/decoding, data
recovery, remote observation, etc. The National Reconnaissance Office is the branch of the intelligence community primarily responsible for
"satellite recon" as you put it.
You can find out more info about the various members of the intelligence community and what they do at their new website:
www.intelligence.gov...