I wonder how much of it is actually true vs. how much was invented out of thin air.
There once was a time when I would have taken such a detailed recital at face value, but events have shown that the FedGov (including the DOJ/FBI, CIA, IRS, DHS, and others) can not be trusted to be truthful.
For FedGov agencies who at least superficially claim that 'sources and methods' of intelligence gathering must remain protected, they sure are putting a lot of stuff out there.
Brainstorming about how certain pieces of information might have been gathered leads either to conclusions that the FedGov made use of a massive and pervasive electronic surveillance network, both domestically and abroad, as well as massive and competent humint capabilities, or else there is a great deal of creative writing going on.
I suspect that the answer is "both".
I certainly understand that deception is a form of tradecraft that is necessary in certain realms, although I question whether that is allowed to extend to sworn declarations before a US court.
Yeah, because the FBI folks that do this type of stuff have so much integrity..