Security Station:
The clones wait until the droids reach about a quarter of the way across the field.
"Open fire!" one of them yells once the droids reach short range for their blaster rifles. Mindful of how much ammunition they carry, the clones use single shot fire. Blaster fire erupts on both sides as the droids return fire. None of the clones are hit in the first salvo, but one of the droids drop, leaving nine marching across the field.
Spoileryour action.
Sub-Level
The passage away from the track turns to the right, heading almost back the way you came. You notice heavy wires on the ceiling here, curving into the wall above a closed durasteel door to your left. The passage ahead extends further another fifty feet, and ends at a metal ladder attached to the wall. Your guess is the ladder is beneath the Power Station. Next to the ladder, a single B1 droid rests in a charging station, and it seems either deactivated or unaware of your presence.
The door sports a card reader and number pad, with a small red light to indicate its locked status.