Ethan Hunt: We live and die in the shadows, for those we hold close, and for those we never meet.
Grace: Am I the reason she's dead?
Luther Stickell: No, she's the reason you're alive.
Ethan Hunt: Which way? Left or right?
The Entity: It doesn't matter.
Ethan Hunt: What do you mean it doesn't matter? Where is she?
The Entity: She's on her way to the Minich Bridge, where Gabriel is waiting. You will never get there in time. But you can, Ilsa. I know what matters most to you, Ethan.
Ethan Hunt: This isn't Benji.
The Entity: No, it's not. But you are done.
Eugene Kittridge: Our lives are the sum of our choices. And we cannot escape the past. Ethan, this mission of yours is going to cost you... dearly.
Luther Stickell: Ethan, what's your objective? What's your ultimate objective?
Ethan Hunt: Your life will always matter more to me than my own.
Luther Stickell: None of our lives can matter more than this mission.
Ethan Hunt: I don't accept that.
Eugene Kittridge: Your days of fighting for the so-called greater good are over. This is our chance to control the truth. The concepts of right and wrong for everyone for centuries to come. You're fighting to save an ideal that doesn't exist. Never did. You need to pick a side.
Answer: Maybe they didn't have any guns at that point.