Ok I was thinking about vacume power and its ability to tap into and draw power from small particles around it. As SM:P VM says the problem with stealth is you have to emit energy. If vacume energy comes on the scene early in tech 16-18 [I do not have the book right now] why could you not expend energy into the same system you draw it from? ie spread the energy you generate into the particles bending, bouncing, movement, etc.
Thanks
MDC