Left for San Antonio, the check-out and maintenance depot. According to AW&ST there is one unspoken for white tail still in the hangar there.
Boeing Ends C-17 Airlifter Production in California | Defense content from Aviation Week
"....LOS ANGELES – Boeing closed out C-17 deliveries and seven decades of aircraft production in Long Beach, California, with the departure of the last airlifter for the Qatar Emiri air force to the company’s San Antonio facility on Nov 29.
The final aircraft is one of four C-17s that will be delivered to Qatar in 2016, and together with one aircraft that remains unsold and in storage in Texas, takes the overall production tally to 279. Not including the prototype, structural test airframes and the five undelivered aircraft, Boeing has so far officially delivered 271 C-17s, including 223 to the U.S. Air Force and 48 to international operators....."