NASA Eagleworks is certainly legit. Kinda like the skunkworks.
I believe this is the same Dr Harold White who claims to have achieved nanometer scale warping of space.
The effects of thrust are also relative. If, for example, the otherwise micro-thrust of this EM drive was put on a craft equipped with a mass-negator (anti-gravity), the resulting acceleration and speed could be staggering. And yes, mass-negation has been demonstrated through experiments with fast-rotating magnetic fields.
Throw a trillion dollars in black money at all this for the last few decades (or more) and who knows what the government is sitting on!
Some forum posts.