The F.B.I.’s seek at former President Donald J. Trump’s Florida house used to be pushed partly via the federal government’s effort to verify the safety of the country’s maximum extremely delicate knowledge, together with, in keeping with an individual briefed at the subject, subject matter designated “Special Access Programs” — a class that limits some to a tiny team of most sensible army and intelligence officers.

The Wall Street Journal reported on Friday that federal brokers had got rid of 11 units of categorised paperwork throughout the quest, together with some categorised as most sensible secret and designated to be to be had best in protected executive amenities.

Historically, particular get right of entry to techniques were reserved for terribly delicate operations performed via the United States, or for intently held applied sciences and features. That may come with covert techniques towards adversaries, or the advance of particular surveillance and guns applied sciences, reminiscent of new varieties of stealth airplane and hypersonic missiles.

But SAPs — because the techniques are continuously referred to as — don’t point out a better point of classification. Instead, they’re supposed to restrict the quantity of people that have get right of entry to to secret or most sensible secret fabrics. They are created when the sharing of explicit knowledge represents a heightened danger of destructive disclosures, or when a “secret” or “most sensible secret” classification isn’t deemed sufficiently protecting.

Only a couple of most sensible cupboard officers, together with the secretaries of state and protection, or the director of nationwide intelligence can create a SAP; and data positioned inside a SAP is to be had to just a handful of high-level officers, together with the president and his most sensible nationwide safety officers. As with all extremely delicate intelligence, subject matter designated as SAP may be very intently tracked to watch who has treated the guidelines.

The executive stock launched on Friday of things taken from Mar-a-Lago made no connection with SAP, however some paperwork have been marked “ts/sci,” that means the pieces are most sensible secret and are best intended to be learn in a protected executive facility.

The Washington Post reported that some of the fabrics the F.B.I. used to be looking for within the seek have been paperwork with regards to nuclear guns.

In January of this yr, Mr. Trump grew to become over to the National Archives 15 bins of subject matter he had improperly excited about him when he left administrative center. The archives due to this fact known categorised subject matter within the bins and referred the matter to the Justice Department, which later convened a grand jury.

It remains to be unclear what sort of paperwork the federal government thinks Mr. Trump may nonetheless have in his ownership, or why. He continuously referred to as such paperwork “my intelligence” or “mine,” and he continuously reviewed such knowledge throughout his journeys to Mar-a-Lago whilst he used to be president.