A battery of two 3-inch antiaircraft guns was built on top of the bluff at Fort Worden in 1920. In 1937 a third gun was added as well as two new director positions. Also, a store room in Battery Randol's plotting/BC complex was converted for use as a power plant for the AA battery.
Two new fire direction positions were built in 1941, a new director shelter and also a height finder shelter. The new shelters consisted of a concrete pit eight and a half feet square and about four feet deep. Each had a roof made form sheet metal and
wood. The roofs could be removed by rolling them to the side on a concrete track. This was done to give the instrument a clear view of the sky.
I have been unable to locate any remains of the AA gun pads or the pre-1941 director shelters.