The UMBRA Smoke Screen Missile, commonly called the Shadow Missile, is a smoke screen in the form of a high-speed fire-and-forget cruise missile. Upon impact, a Shadow Missile vents a pressurized aerosol into the surrounding area. This aerosol is extremely dense and reduces visibility to within a one-foot radius, serving to disorient enemies and allow for stealth. Shadow Missiles are very useful for stealth attacks and are cheap and easy to produce. Ternville's factories are the main source of Shadow Missiles.