The United States has more intelligence gathering operations than you or I know about. Worse, they don't even really know about each other!
To sum up the report in a short paragraph, right now American intelligence agencies grew about twenty percent in number since September 11, or about 250 brand spanking new agencies, each with its own little fiefdom and domain. In a "publish or perish" mentality not unlike that in academia--who said eggheads were only soft and left-leaning?-- in order to justify their budget line item, these agencies issue a flurry of reports and paper that often contradicts other reports, and worse, gets ignored.
The scariest item in the investigation is that nearly a million people, 854,000 and one and one half the number that actually live in DC, have the highest security clearance (e.g. actually know what happened at Roswell). That's a rather large number to have access to the most sensitive information on the planet.
By contrast, President Obama is about six levels down in security clearances, although by law he must be provided any information he requests, whether his security clearance covers it or not.
What does all this mean? If America before 9/11 was unable to connect the dots (and to be fair, Bush should have considering those kinds of games are at his grade level), now there are more splatters than on a Jackson Pollock. Some will connect. Some that should will not. Some that should not, will. And when the next attack happens, I'm betting that there will be more of the middle than of either of the other two.