One of the many area of interest in the US if you’re into strange “craft”.
http://www.dfrc.nasa.gov/Gallery/Photo/index.html
There are many web sites on the net which talk about strange crafts, and whether governments (particularly the US government) have harnassed any alien technology recovered from crashed UFO’s. Alot of stuff is also attribute to secret test planes, some of which Dryden have published photos of (a long time after the initial hull-a-balloo has died down).
A good description of Dryden is on : http://en.wikipedia.org/wiki/Dryden_Flight_Research_Center