They don't know where it came from.
4 seconds sound clip from the Donnie Darko movie soundboard.
You can hear this line at 00:15:43 in the Blu-ray version of the movie.
Quote context
[...]
- Mrs. Darko, I'm Bob Garland. I'm with the F.A.A.
- If you don't mind, we'd like to speak to you and your husband privately.
- Please.
- We have arranged for you to stay at a hotel. Get some sleep and we will take care of things here.
- Great.
- Kids, come on, we're going to a hotel.
- They don't know where it came from.
- If it fell from the plane, then what happened to the plane?
- Is there any way we can make money from this?
- Can we get on television if we sue the airline?
[...]