When you add in the logic of "pure" into this entire search...then you start talking of a "expert"...not a teenage kid named Carl working in his home-made lab over the garage. If you look at all of these scientists....who work on government projects...all make in excess of $80k per year. Most will make more than $100k a year...so they can afford to build a lab in the back of their garage that would easily handle this kind of situation. Don't forget...there are college labs that are selling or dumping their old hardware all the time...so a smart guy could walk in and buy a $50k item for less than $6k...and just build onto his lab piece by piece. These guys are like mechanics...they know their profession and their tools.
Behind all of this PR work of the FBI...they have to know that this is a inside job...that their list of possible performers is down to probably 15 guys...and they just can't get much further. Whoever did it...was very smart...and covered every obvious trail. They will have to slip up...and a third party realize their connection (like a ex-wife) before this will happen. In fact...they probably already know that the guy is single...because a curious wife would have called the cops already.
Our country trains hundreds of thousands of foreign students and has for some time.
Please define "inside job".
One of us trying to warn people??? or one of them on the inside of one of our institutions?