" He checked out his surrounding. More books. A drinking fountain. A poster showing a guy slam-dunking a basketball with one hand and holding a book in the other, urging kids to READ! Weird, thought Steve. How can he even see the hoop?

...

You see, Steven, Librarians are the most elite, best trained secret force in the United States of America. Probably in the world."
"No way."
"Yes way."
"What about the FBI?"
"Featherweights."
"The CIA?"
Mackintosh snorted. "Don't make me laugh. Those guys can't even dunk a basketball andd read a book at the same time. "

― Mac Barnett , The Case of the Case of Mistaken Identity (Brixton Brothers, #1)