Check common sense facts. Most junior CA being 2013 is meaning that they are doing upgrades, but how long has that junior CA been with Mesa? It doesn't mean that everyone is getting upgraded in 2 years, Most bases being 2003 means the guys waiting 6+ years have a ways to go, so how does the fact that there is a junior CA upgraded in 2013 in IAD any indication that regional upgrades are happening quickly?