The Pacific Barrier (BARPAC) received the first operational AEW squadron, Airborne Early Warning Squadron One (VW-1) and the first EC-121K aircraft. AEW Squadron Three followed with AEW Squadrons Twelve, Fourteen and Sixteen. In January 1958 VW-1 and VW-3 relocated to NAS Agana, Guam, M.I. where VW-1 continued its AEW commitments and VW-3 operational commitment was divided between AEW and Weather. BARPAC became ops with AEW Squadron TWELVE (VW-12) based at NAS Barbers Point, Hawaii, operating from a deployment base at NAS Midway on 1 July 1958 and later expanded to include AEW Squadrons FOURTEEN (VW-14) and SIXTEEN (VW-16). Their orbits overlapped the radar picket stations of the ships of Escort Squadron Seven (CORTRON SEVEN), from roughly Adak Island to Midway. Normally 5 WV-2s/EC-121s were required at any single time to provide coverage over the entire line.