*MRV, or multiple reentry vehicle, indicates multiple nuclear payloads for a single target.
*MIRV, or multiple independently targeted reentry vehicle, indicates multiple nuclear payloads capable of striking multiple targets.
─Randall Fortson, NHHC Histories and Archives Division, February 2021
Sprinardi, Graham. From Polaris to Trident: The Development of U. S. Fleet Ballistic Missile Technology, 7. Cambridge: Cambridge University Press, 1994.
United State Department of the Navy. Facts and Chronology: Polaris-Poseidon-Trident, 20. Washington, DC: Strategic Systems Programs, U.S. Navy, 2015.