Locate and infiltrate the main entrance to the base and free the captured
green berets.

Objectives...

- Gain access to the base

- Locate the Yellow Swipe Card

- Use it to enter the command centre to gain further access to the power grid

- Shut down the force fields

- Find the Code CD and use it to free the prisoners before getting out
  alive

Once the prisoners are freed they should assist you.  Be warned that there
have been reports of sightings of strange organisms within the base, you
are authorised to investigate further.

Good luck.

