I wonder if there is an underlying re-organisation of the tanker force being planned underneath this - with the KC-46 coming on stream in the near future, prehaps they intend to withdraw the European deployed KC-135Rs back to the States to replace the KC-135Es, and forward deploy the KC-46s. Consolidating the tanker bases means that they have one less base to upgrade the infrastructure.
Dave, the stateside active and ANG/AFRC units all use either the KC-135R or T (the latter formerly the Q models that refuelled the SR-71s); so all of them have the big 'fan' engines now. You get the impression that 'base upgrades' bear no relationship to the longevity of the base in question; Mildenhall has seen much new infrastructure in the past few years; new taxiway link 'echo' amongst others - only to be listed for closure!
I wonder where a wing of KC-135s will go in Europe - Spangdahlem? Could Ramstein accommodate the additional traffic on top of its current activity levels (granted C-17 traffic falling with winding down of Afghan ops, etc)?