yes I have been impressed in these kind of things... but they are not last of the technology. Don't forget people have been building some amaizing
things without being CIA. For example take a look at the following links:
www.rhc.ro...
www.rhc.ro...
www.rhc.ro...
These "machines" are called micromodels and they weight around 1-2 grames despites their dimensions. They are propelled by light weight rubber bands
and they are actually build using magnyfying glasses. Pretty interesing, isn't it?
I built this kind of things and this way you can trust me that micro-devices that fly are not that amazing as it is believed to be. OK I agree it is
not very easy to make them but ... from here it's a long road to get to spend millions of dollars.
MIG-29