U-2S
https://en.wikipedia.org/wiki/Lockheed_U-2
http://www.af.mil/About-Us/Fact-Sheets/Display/Article/104560/u-2stu-2s/
http://lockheedmartin.com/us/products/u2.html
http://lockheedmartin.com/us/news/features/2014/5-ways-u-2-goes-above-and-sees-beyond.html
https://en.wikipedia.org/wiki/Lockheed_U-2#TR-X
SR-72
http://lockheedmartin.com/us/news/features/2015/sr-72.html
RQ-4 Global Hawk
https://en.wikipedia.org/wiki/Northrop_Grumman_RQ-4_Global_Hawk
[youtube https://www.youtube.com/watch?v=IiGnaqouUfA&w=560&h=315]
RQ-180 stealth UAV
https://en.wikipedia.org/wiki/Northrop_Grumman_RQ-180
