The NSA disclosed that it gathers some 250 million internet communications each year, with some 9 percent from these "upstream" channels, amounting to between 20 million to 25 million emails a year. The agency used statistical analysis to estimate that of those, possibly as many as 56,000 Internet communications collected were sent by Americans or persons in the U.S. with no connection to terrorism.
So, of the 20-25 million emails collected "upstream" they are saying approximately 99.75% do have connections to terrorists?
With that much intercepted communication what is taking so long to find them?