Evolutions - Covenant

…then knelt and lifted a half-loaded  Covenant carbine rifle from a dead Jackal's grasp. He sighted the Elite nearest Jonah, the weapon's aiming reticule drawn directly at the beast's head - the instant he so much as twitched, a hail of radiation would liquify his brain cavity.

- Halo: Evolutions, Headhunters, Chapter 4