Quote Originally Posted by j0be View Post
Grr.. I need to check my hearing (this is why I listen to each episode multiple times) Also, if I would have thought about it, helicopters almost never go in hangars because of their aerial takeoff.

Which given that, it was most likely recent. (Given weather, and no description of scent)
You do put them in hangars (that's why they have wheels) so don't beat yourself up to much