2nd Bn, 56th Arty, 1966-68 (Source: Richard Tracy) The AN/GSS-1 Electronic Search Central -- known simply as The Radar Van (or "Jessie One") -- visible on the right side of the "overview" photo -- just after relocating from the Old BOC. (Note white paint on New BOC, fresh tire tracks, OC and UHF commo vans beneath the camo nets.) It is using the 20-foot antenna, installed directly on top of the radar shelter; the BOC radar tower, designed for a larger (40-foot) AN/GSS-7 radar antenna, is being used as an interim UHF tower.