Chalet Cindy has an informative blog post on passenger manifest priorities. If you’ve ever wondered why you got bumped, she explains it.
the next-top level of priority is someone who has been terminated. for obvious reasons, a recent termination is a potentially dangerous (at the worst) or mischievous (at the least) person. for this reasons, terminations have to be timed carefully, especially in light of possible weather or mechanical delays.