Retired Air Force Colonel Donald Ware has claimed that a three star general revealed that "the new Lockheed-Martin space shuttle (National Space Plane) and the B-2 (stealth bomber) both have electro-gravitic systems on board" and that "this explains why our 21 Northrop B-2s cost about a billion dollars each."
I feel that it is also worthy to note that the Selected Aquisition Report (with which United States lawmakers track the cost of major U.S. weapons projects) valued the B-2 program at $45 billion. With 21 aircraft built, that works out at $2.14 billion each, twice the cost as stated above.
After taking off conventionally, the B-2 has the option of switching to anti-gravity mode. It has been said that using it's anti-gravitic technology, the B-2 can fly around the world without refuelling.
The F-117 stealth fighter also has hybrid propulsion and lift technologies which may be electro-gravitic systems. Utilizing conventional thrust for public take-offs and landings, switching to anti-gravity mode would allow an extended cruising range, lightning fast manouverability, and for shrouding the airframe in invisibility (by having its local counter-gravity field bend light around the airframe).
How are anti-gravity systems controlled?
It has been known for sometime now by "Black World" technologists that the key to controlling gravity is Element 115 on the Periodic Table - Ununpentium. The most important attribute of this heavier, stable element is that the gravity A wave is so abundant that it actually extends past the perimeter of the atom. These heavier, stable elements literally have their own gravity A field around them, in addition to the gravity B field that is native to all matter. By controlling the gravity A wave, you can control gravity. By fuelling an aircraft reactor with ununpentium, you have an aircraft capable of utilising anti-gravity propulsion.