One of the things I was interested to see at Moses Lake was the new testbed being fitted out for Rolls Royce.  Rolls currently has a Boeing 747-200 that they use for airborne testing of their engines.  I shot it at Tucson and posted about it here.  They recently acquired a 747-400 from Qantas to use as a testbed and it was moved to Moses Lake for conversion by Aerotec.  I don’t know the timescales for the conversion process but it will be interesting to see it when ready in house colors and hopefully with a big engine installed on one of the inboard pylons.