clyde61 wrote:

Here are a couple of pictures of the Navy's NP-3D, which I believe is
stationed at Patuxent River NAS.
http://www.flickr.com/photos/9632389@N03/3702385420/

http://www.flickr.com/photos/9632389@N03/3702385394/

Anybody know exactly what the Navy is doing with this plane? It seems
to me to be part of a test program of some sort.

153442
Lockheed P-3B-90-LO Orion
c/n 185-5239
First production Heavy Weight P-3B. Was EP-3B Naval Research Laboratory
EW simulator and evaluator. Now CEC project aircraft, fitted with E-2C
type rotodome.