At RAH if you can get in the aircraft that serves that base then sooner or later you'll be able to get the base. I don't know anyone who wanted a specific base and wasn't able to hold it within 3 months. You might be on reserve much longer there but you'll be able to get it. Currently anyway. Biggest downfall at RAH is the basing issue. They can pull the plug and shift resources fast. Very few bases feel like they'll stay in the long run. STL, CMH, IND seem to be the big dogs. CMH is their MX hub so while it isn't the biggest if feels the most stable IMHO.