Hazardous Environment Combat Unit Wiki

 Welcome to the Hazardous Environment Combat Unit! The Hazardous Environment Combat Unit,[5] often abbreviated as HECU, is a fictional United States Marine Corps Special Operations Unit featured prominently in Half-Life and its expansions.

The Marines of the HECU are specially trained to deal with a variety of indoor combat situations, particularly involving a dangerous environment and unconventional enemies. Members of HECU are trained by drill instructors Dwight T. Barnes and Sharpe, and train at bases guarded and staffed by members of the Military Police. The Marines are often referred to as "grunts" by fans of the game and also as such by Black Ops Operators in the game.

With the Black Ops, they are part of a "dangerous and very efficient clean-up crew" sent to Black Mesa in case of emergency, and are supposed to work in concert with the Black Mesa Security Force in these cases.[6]

In the Half-Life Audio Script, the HECU Marines are described as follows: ''Human military units sent in to "clean up" the base following the disaster. It is their job to execute anyone with knowledge of the research project that went awry. The more you know about the project, the more they want to kill you. They especially hate you, Gordon Freeman, personally - because you have cut down quite a few of their buddies.''[7]

They are featured in Half-Life, and its expansion packs, Opposing Force, Blue Shift, and Decay.

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