Boeing Airfields in Seattle

[airsmiles]

Apologies to those who responded to my previous enquiry, but I can't find the original post in the forums search facility.

I'm visiting the Everett Tour Centre (Paine Field) next week, but would like to know how Boeing use their 3 airfields re; flying activity. I believe Renton and Paine Field are manufacturing facilities, but Boeing Field (King County) airfield is where the actual test flying takes place.

Can anyone confirm this please ? I really want to know where most of the activity, and therefore interest, will be.

Thanks in anticipation.

airsmiles

EDIT: It is in the sticky at the top, dated 21/3/05