Enter the large hangar bay door in front of you. Kill the stormtroopers and TIE pilot within. There are a pack of trip mines on boxes. Then take the lift up. Directly above you is an automated turret as well as a TIE pilot on the opposite side. Kill both and take the lift on the other side. Exit through the door. The first enemy you see will be a jet-equipped trooper, armed with a repeater. Mind trick him and then kill him. Turn left from the door and cross the walkway to the shield generator. Hit use on the beacon, which is on the far side of the dimple. Enter cutscene. The next beacon, to be placed on the hangar, is directly behind you. Another cutscene. An Imperial worker will attack you. Push him off or slice him. Face the door to the hangar bay and jump onto the uppermost pipe, from there to the roof of the hangar, and to the barracks building which is to the right. Hit the beacon and watch the cutscene.
Took that from
here
GameFAQs is usually pretty reliable for game help, if you get stuck in the future.
[Edit: Fixed the spacing]
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"This hole is octogo. Ogiganeel. It's Octa.. It's got eight sides."
"He's a dead man! I'm not havin' a dead man in my cemetary!"
[This message has been edited by LividDK27 (edited May 04, 2004).]