Yeah, what I have thought for a long time. Echelon 5 Delta which, by the way, are the REAL world versions of Splinter Cell.
Depends who you ask. Some get out because they simply can't produce any longer but some oaths and some clearances, you're right, never expire.
Guys, pay close attention to bomber routes. I would bet they all converge on very specific areas and would bet even further that area is about to get lit up
OSI from Hill in location as well.