Yep the SOW are the dodgy wing of the USAF, the fly anything, anywhere, anytime on seriosly clandastine missions, clandestine meaning.....you don't need to know.
And I quote "The 16 SOW specializes in unconventional warfare. At the direction of the President of the United States and the Secretary of Defense, the 16 SOW goes into action with specially trained and equipped forces from each service working as a team to support national security objectives. Special operations are often undertaken in enemy-controlled or politically-sensitive areas and can cover a myriad of activities"
http://www.hurlburt.af.mil/16sow/
It would not surprise me that the aircraft refered to in this thread is to do with the USAF SOW
