Water Hazard

Chapter 4: Water Hazard
After taking the Airboat, Gordon Freeman makes his way through the Canals of City 17, on which he has several encounters with Civil Protection units, who ambush him more than once. Several times, the G-Man can be spotted, controling Gordon's 'work'.

After a short ride on the unarmed Airboat, and after being pursued by a Chopper for a good time span, Freeman enters another Resistance Outpost, where a Vortigaunt mounts one of the Chopper's Heavy Machineguns to the Mudskipper. Prepared for everything, Freeman continues his journey to an old dam, where Gordon takes out the Chopper and, after doing this, enters Black Mesa East, which is set in the old Power Plant at the base of the dam.