KC135TopBoom From United States of America, joined Jan 2005, 11742 posts, RR: 51 Reply 1, posted (2 years 2 weeks 6 days 7 hours ago) and read 2476 times:
Most likely it was a USAF KC-135.
But it could also be a French or Turkish KC-135, or an Israeli KC-707, which also has a KC-135 Boom attached.