Sector A Training Facility

"Hello, and welcome to the Black Mesa Hazard Course, where you'll be trained in the use of a Hazardous Environment Suit. I am your Holographic Assistant."

- Gina Cross' Holographic Assistant counterpart

Sector A Training Facility is one of the seven main sectors of the Black Mesa Research Facility. It is connected to the Green Line of the Black Mesa Transit System.

Hazard Courses
Encountered in all four of the original Half-Life games, Sector A's Training Facility contains the separate Hazard Courses used for training scientists (predominantly in the use of the HEV Suit in the standard "Black Mesa Hazard Course") and security guards (in the "Black Mesa Hazard Course for Security Guard Training"). Demonstrations are provided by trained instructors or prerecorded Holographic Assistants,   whilst participants are constantly monitored by observing scientists.

The two known Hazard Courses are apparently built over old, disused industrial maintenance sectors of the facility, and are each divided into an obstacle course for physical training, and a target range for firearms training.

The Hazard Courses appear as the optional training chapters of Half-Life and Blue Shift, the latter based on the same maps, although they are two different areas.

In the Opposing Force We Are Not Alone, the standard Hazard Course can be accessed with the Displacer in the map the weapon is found in. There the facility appears to have been damaged as well by the Resonance Cascade, and the Holographic Assistant is still working. Vortigaunts are swarming the area and attack the hologram, probably thinking it is a living being, but do not damage it.

In Decay, the Hazard Course is visited when Gina Cross and Colette Green are required to cut through the destroyed remains of the Hazard Course to reach the surface with Rosenberg during the chapter Hazardous Course. Zombies instead of scientists are now found in the observation rooms.

Satellite Communications Center
Located right outside the Training Facility, it houses a large satellite uplink dish. This facility is used in Decay when Colette Green and Gina Cross help Rosenberg contact the military. Near this area is a vast semi-subterranean freight warehouse, which Cross and Green must traverse through to open the locked door to the dish control room.

Other
Barney Calhoun's schedule also places the Area 4 Personnel Dormitories in this sector.

List of appearances

 * Half-Life: Day One
 * Half-Life
 * Half-Life: Uplink
 * Half-Life: Opposing Force
 * Half-Life: Blue Shift
 * Half-Life: Decay