But they would still have a special weapon. It's veterans.There probably wouldn't be any special prep I feel since the protagonists in the original game (outside of the Government lady) didn't really have much forewarning of what went wrong with the Ishimura. So while they'd be on alert due to a ship seemingly lost contact they wouldn't be specially equipped for a bug hunt on a space hulk.
They would be carrying more then a lasgun and just thier armor.
They would have Grenades and more.