Donald Trump is expected to visit the FBI’s New York office on Wednesday for his first classified briefing as the GOP nominee, with New Jersey Gov. Chris Christie and retired Army Lt. Gen. Michael Flynn in tow.

An anonymous senior campaign official confirmed the briefing, which is expected to cover major threats at home and abroad, to ABC News. NBC News also confirmed the news.

Career staffers from the Office of the Director of National Intelligence are expected to lead the briefing. The FBI is not expected to play a role, according to the network.

On Monday, Trump broadly laid out his plan for “extreme vetting” of immigrants trying to the enter the U.S., which he said would include an ideological test to determine whether they share American values. While the nominee had backed away from a blanket ban on Muslim immigration, he did call for a temporarily ban on immigrants from “the most dangerous and volatile” regions of the world with a “history of exporting terrorism.”