Black Mesa Ceiling Turret

"Be careful. As long as those sentry guns are activated, it's suicide to go out there. But it is the only way to the surface. You're going to have to destroy them."

- Rosenberg

The Black Mesa Ceiling Turret is a sentry weapon used by Black Mesa in the Black Mesa Research Facility for security.

Overview

 * Ceiling Turrets are seen in several places within the Black Mesa Research Facility, concealed within the ceiling in an armored cupola. These Turrets are activated by a switch, however these Turrets cannot distinguish friends from foes. Therefore, they will attack anything in range, including all Black Mesa employees as well as the Xen creatures. The Turrets can be deactived (or activated again) by a controlling switch. If a switch is unavailable, Gordon can disable it with explosives or gunfire.
 * The Ceiling Turrets were set possibly to deal with potential escaped specimens, or are perhaps a leftover from the facility's days as a military missile complex.


 * In Decay, Rosenberg simply refers to them as "sentry guns".


 * The sentry gun has two variants: the tri-barreled gun and a smaller single barreled gun.

List of appearances

 * Half-Life
 * Half-Life: Decay