The first Raytheon AN/FPS-115 radars were controlled by PAVE PAWS computers and had a "3 dB Beam Width" of 2.2 deg and had 27 October 1976 "ground-breaking ceremonies" at the East Coast Site. The East Coast site had been announced as Otis Air Force Base on 26 May (Beale Air Force Base was announced as the West Coast site), then Raytheon was contracted on 23 May. After first energized (Otis' south face for 1.5 hours on 3–4 April 1978), System Performance Testing at "the Otis AFB PAVE PAWS facility" was completed 16 January 1979. To mitigate interference at the FPS-115 site on Flatrock Hill from the Cape & Islands Emergency Medical Service (CIEMSS), on 8 February 1979 ESD installed six high pass filters—then Raytheon was contracted 24 May to move the EMS Repeater Station to Bourne, Massachusetts (completed 13 July). After a 5–7 March "final review of the East Coast PAVE PAWS EIS was held at Hq AFSC", the site was accepted by ESD on 12 April. The "first radio frequency transmission" from the West Coast Site was 23 March 1979 (it was completed in October 1979). "ADCOM wanted four PAWS sites, but by the end of 1979 only two had been funded".