"yeah, there is going to be one hell of a fire fight before the nuke goes off..lets go to sector 1-"
Base voice: "Sectors 1 and 2 have been destroyed.building collapsed, remaining areas infested with headcrabs.Seek another exit, marines now patrol ground above"
"damn, now we cant go there!ah..think think think..Aha! Sector 7, experimental Portal technology labs!They said they have a working prototype!I think they said there was a problem, but who cares its the only way.They said the prototype had been moved to sector 16, the storage facilities under heavy guard, so it should be safe."
*He walked over to a station and pressed a button*
"computer, what is the status of sector 16?"
<Sector 16: Secure, no signs of headcrabs, vortigaunts, Grunts or marines.Structual integrity intact.>
"Grea!we have a way out, but it aint pretty.they said we had lost control of sectors 4 through 15, meaning they are overrun with headcrabs and all sorts ofother aliens."