United Arab Emirates ? Equipment in Support of a Direct Commercial Sale of F-16 Block 61 Aircraft.
http://www.dsca.mil/major-arms-sales/united-arab-emirates-equipment-support-direct-commercial-sale-f-16-block-61
UAE raises possible deal for "Block 61" F-16
By: Stephen Trimble Washington DC
http://www.flightglobal.com/news/articles/...ot-f-16-395235/
"A routine disclosure by the US Department of Defense reveals the UAE has increased the size and scope of a potential Lockheed Martin F-16 order, which now includes a mysterious ?Block 61? designation." ... continue to the Link above.