America Secretary of Defense James Mattis addressed reporters in what became an impromptu press briefing on Friday, in which he addressed a slew of issues facing the American defensive infrastructure, and even Michael Wolff’s supposed tell-all book that’s been the focus of the president’s attention recently, “Fire and Fury: Inside the Trump White House.”

Reporters asked the Marine General-turned top defense official if he’s had a chance to read the book that President Trump characterized as “fiction.”

“No. No, I’m a little busy, these days, actually doing my job, you know?” Mattis replied.  Reporters then added that the Secretary of Defense himself was mentioned within the book’s pages a number of times – something Mattis seemed happy to laugh off.

“No, I don’t — I don’t — I purposely don’t read that. And, if it’s a book with my name in it, the aide puts sticky — double stickies over it, so I don’t read about myself.  And that’s done with malice and forethought by my aide, okay?”

That wasn’t the end of Mattis’ kidding around.  When prompted to describe his biggest military concern for the coming year, he simple replied that he “didn’t’ really have any,” but when pushed to choose one, he made a reference to a now legendary response he gave reporters last May – in which he said that nothing keeps him up at night, “I keep other people awake at night.”

“I’d be hard pressed,” Mattis said on Friday. “As you know, I don’t have concerns, I create them.”

Despite the levity in the room, the Defense Secretary addressed a number of serious issues as well, including talks between North and South Korea and the decision to halt military exercises near the Korean Peninsula until after the upcoming Olympics. Mattis made it clear that there has been no shift in military posture toward North Korea, and that training operations near the peninsula would resume as normal after the Olympics were concluded.

When asked if American ships would be leaving the area or remain there if needed, Mattis said only, “we’re always ready to act if we need be.”