+Listen for noises
+Look at door with red window
+Look around for useful gear

(As often as possible I'll combine several options.)

Em felt uncomfortable exploring the dark hallways, so she gave them a quick look and then moved towards the door with the red light, listening intently as she did so.

Everything was quiet. Eerily quiet. Em narrowed her eyes and peered into the halls. She could see several doors in both of them, and one nearby in the second hall looked slightly ajar. Perhaps she could look inside later. Other than that the metal walls were rather bare except the occasional vent or pipe, and they darkened substantially as the hall went on. She found herself wishing that she had some kind of light source, but could see nothing of the kind at hand.

Moving around seemed to help her forget about the pounding in her head. If only she could see any sort of item she could use as a weapon-just in case-then she'd feel much more at ease. Something had caused her injury, after all. And it might come back.

Em approached the door with the red glowing light spilling from it and peeked inside, wondering what she might find.

What she saw seemed to be.. some kind of laboratory. There was a large tank that was open, some strange machinery, and two desks, one of which had a laptop computer. The red light was coming from long thin tubes on the ceiling.

Em tried the handle to the door. It was locked. There appeared to be some kind of high-tech device beside the door with a slot in it. A card key, maybe? It was really solid looking. There was no way she could hope to break it down- It was reinforced.

And how come this lab had power when everywhere else didn't seem to have more than very faint lighting?

1. Attempt to break into the room.
2. Explore hallway A.
3. Explore hallway B. (The one with the open door.)
4. Search for key-card.
5. Other (comment with suggestion)