Deploy from command post four as a sniper class trooper. Now head up the ramp to platform ten and then run to the medical and ammo droid. Once you have reached the medical and ammo droid, start shooting the droids that are in the turrets around command post one. Once you have gained the marksman award, snipe a few more droids, and then run back to command post one and become the Jet Trooper. This strategy can be implemented when playing as the Republic faction.