RAF RC-135 ZZ664 up as Goose-51 for another day of WSINT action. Today with an AWACS, a Pegasus, and an unseen KC-135. Yesterdays activities were over the Pacific off Baja Ca. USAF RJ 63-9792 is also deployed to Nellis for this exercise but haven't been seen flying. They pinged as Corvs-55 on the ramp but went "dark" before flying.