Why exactly are there snakes on this plane?

Neville

I don't have time to explain.

Well, you better make time. You put us at risk and you're gonna tell us why.

Neville

What I'm gonna tell you is to go back downstairs now.

Man, who the hell you think you are?

Sean

Whoa whoa whoa, okay, look. The snakes are on the plane because... I'm supposed to testify tomorrow against Eddie Kim.

Jesus Christ. We're all dead!

Neville

Not me. It's my job to handle life-and-death situations on a daily basis. It's what I do, and I'm very good at it. Now you can stand there and be the panicked, angry mob and blame him, me and the government for getting you into this. But if you want to survive tonight, you need to save. your energy and start working together. Now what we need to do is go back in there and find all the dead snakes we can so the doctors on the ground will know what kind of antivenoms we need. Whatever you find, you bring it to me. And I don't need to tell you to be careful.