Question: Do you know what the pilots say (and what language) at the end?
Question: Why did Jones fire at the ceiling when Clifton is attacked by the infected Mailer?
Answer: Because he is incompetent and doesn't know how to fire the gun properly. When he tries to shoot Mailer, the recoil takes him by surprise and he stumbles backwards, still squeezing the trigger, spraying wildly upwards.
Question: In the beginning, there are several shots of riots, seemingly stock footage. One shows a man hanging and people beat him really hard to death. It was short, but quite disturbing. Was this real footage? If so, what was the real incident?
Answer: None of these shots are real footage; it was scripted and shot for the movie, made to look like newsreel/raw footage.
Answer: It's Finnish. They say "Lähetätkö helikopterin?" which means "Will you send a helicopter?"