opposing force i guess

At the same time as gordon freeman and barney calhoun is moving through the facility, One of the HECU Soldiers are aswell.
Why the hell did i make the description like that? I dont know. Anyways yeah this is my first part of opposing force.
..Almost an hour long. Really. ALWAYS THE FIRST PART, I SWEAR, THE SECOND PART IS ALWAYS LIKE 20 MINUTES OR SOMETHING BUT THE FIR-