Seniority is actually a very simple concept. If an airline has 1,000 pilots, #1 has been there the longest and #1,000 has been there the shortest. The only way to move up the list is for people senior to you to quit the company, retire, or die. If an airlines is hiring and expanding, the junior guy will not be junior for long because people are getting hired beneath him. If an airline all of a sudden stops hiring, then that last person on the list will be very “junior” until the airline starts hiring again. Somebody hired around the same time as Tory is probably getting very comparable schedules to Tory.