vertical launch system, a missile launching system currently deployed on Aegis cruisers and destroyers. This system might be altered to house missiles larger than it can currently accommodate. Those larger missiles might be needed for a sea-based midcourse or sea-based boost-phase system.

Viking Library System, a federated regional public library system headquartered in Fergus Falls, Minnesota.

Same as ELS.

a Technip proprietary technology for installation of flexible pipes.

Vapor-Liquid-Solid

A script designation for very long shot.