Hazardous Environment Combat Unit

The Hazardous Environment Combat Unit, abbreviated as HECU, is a United States Marine Corps Special Forces Unit that is featured prominently in Half-Life and its expansions. Specially trained, they deal with a variety of indoor combat situations, particularly involving a dangerous environment and unconventional enemies.

Overview
The Hazardous Environment Combat Unit, abbreviated as HECU, is a United States Marine Corps Special Forces Unit that is featured prominently in Half-Life and its expansions. Specially trained, they deal with a variety of indoor combat situations, particularly involving a dangerous environment and unconventional enemies.

Equipment
Each HECU marine is equipped with urban camouflage battle dress uniform (BDU), a powered combat vest (PCV), and can be equipped with either a PASGT helmet and/or an M40 gas mask. The HECU marines carry different weaponry based off their character model:


 * Standard Soldier: MP5 submachine gun
 * Shotgun Soldier (Balaclava): SPAS-12 Shotgun
 * Demolition Soldier: MP5 submachine gun with attached grenade launcher
 * Squad Leader: MP5 submachine gun with attached grenade launcher, or shotgun

Small arms weapons

 * Glock 17 (Beretta M9 in the HD pack)
 * Desert Eagle
 * MP5 with attached grenade launcher (M4 in the HD pack)
 * M40A1 Sniper Rifle
 * SPAS-12
 * M249 Squad Automatic Weapon
 * RPG
 * Laser Tripmine
 * Mk 2 Grenade
 * Combat Knife
 * Satchel Charge

Fixed weapons/heavy artillery

 * Sentry Gun (cannot be used by the player)
 * M198 Howitzer
 * M2 Browning Machine Gun
 * Unidentified double and simple sandbag turrets *
 * M202A1 FLASH *

Explosives

 * Dynamite *
 * Land Mines *

Vehicles
The HECU marines use the following ground and air vessels:


 * AH-64 Apache
 * V-22 Osprey
 * M1A1 Abrams
 * M2A3 Bradley
 * F-16 Fighting Falcon
 * M35 cargo truck

Technology
The HECU marines use the following pieces of technology to carry out their mission:


 * Powered Combat Vest
 * Tactical Map
 * Welding Torch
 * Radio