Out in my old stomping grounds of Seattle, Boeing is apparently vying for the title of Xtreme ITAR Champion^TM, reports the Seattle Post-Intelligencer:

Boeing also has been adding engineers on its 787 program in Everett as well as engineers for the Navy's Multi-mission Maritime Aircraft. This will be a military version of the 737 for the U.S. Navy that will replace the current P-3 planes used as sub hunters. Boeing won this competition over Lockheed Martin last year. Eventually, the Navy wants more than 100 of the Boeing jets.

Boeing disclosed yesterday that these Navy 737s will be assembled in a building adjacent to the Renton plant where the commercial 737s are now assembled. That other building is used to fabricate 737 wings.

In order to comply with the strict requirements of the U.S. International Traffic in Arms Regulations, or ITAR, access to the production line for the Navy's 737s must be restricted.

Other military derivatives of the 737, and in some cases 737s ordered by U.S. customers, will be built on that ITAR-compliant line, according to Boeing.

This may have something to do with Boeing's commitment to export compliance.