I think the three stories intersect very intelligently though. It was interesting learning about each independent character and then seeing how they effect each other towards the end of the film - most notably with Tom Hardy's character as the pilot who is trying to stop them being slaughtered from the skies.

I agree it should have been a little bit longer though in order to flesh out the characters more. But adrenaline-soaked thrillers like this tend to be pretty short.