" As Cole and Pike slipped out, Stone said, “Want the M4? It’s ideal for urban assault.” Cole frowned at Stone. “You have an M4?” “Shit, yeah, man. Suppressed. Frangible bullets so you don’t kill a buncha people in the next house. Straight from the Delta Armory.” Cole looked at Pike. “Is he kidding?” “Let’s go.” Pike jogged away, and Cole fell in behind him. They slowed as they neared the house, then lingered at the nearest side gate to let a car pass. Neither spoke, and neither needed to. Pike had been on missions as long as a week, and never uttered a word. Pike "

― Robert Crais , The First Rule (Elvis Cole, #13; Joe Pike, #2)