Ch'lana is calm when he says, "Trax." He indicates Collan, Niil and himself. "We have an obligation to minimize the loss of life. The unconscious troopers were no threat, and by the time they regained consciousness we'd have left them far behind. To your other question - the life of an individual Stormtrooper makes near enough no different in the fight. And while the death of the Emperor would significantly affect the struggle, he is far too powerful for us at this time. And even if he is killed, the Empire war machine would remain a threat. We need an army to defeat them - an army the senators can provide. Even if we had the opportunity to take out the Emperor, I would not take it. Saving the senators is - and must be - our goal."
Ch'lana pauses. "Trax, whatever pain you are trying to salve, killing troopers will not help. The dead are dead and no amount of killing will change that. But there are others with you," he indicated Nim and Keshani, "who are alive. Capable as they are, they are not warriors. I cannot keep everyone safe alone, Trax. They would be safer with another protector, not a killer."
Ch'lana tosses a severe glance at Niil and Collan. He then squeezes Nightshade's shoulder in thanks.
Ch'lana points to the east. "We need to move. More troopers are on the other side of that door. They will get through in moments."
The next leg of the journey is to the west, and there you enter a maintenance passage.