From this meeting Mr. Oberg proceeded to the Hastings Instrument Corporation near Langley Air Force Base, Virginia, to study the possible use of the Raydist navigational system. Hastings claimed that Ray- dist was the most accurate device known for such purposes, being capable of determining aircraft positions within 25 feet. provide all the equipment needed. Hastings could also During Raydist surveys in the Bahama Missile Range, the instrument performed accuracies of one part in 38,000, to no measurable error, at distances of 30 to 75 miles. Other results obtained from tracking aircraft at supersonic speeds indicated velocity accuracies within one percent and instantaneous position within 50 feet. Raydist competitive marks revealed: é Raydist average error of fix ...«..e.-.e-s+. 6 feet Loran average error of fix . « + 0 6 « « « «© » 750 Leet SHORAN average error of fix ......+.++. 2 3/4 miles Following his study of the Air Task Group requirements, Mr. Oberg recommended the use of Type N Raydist as being most able to cope with after-the-fact instantaneous positioning of two aircraft. Hastings stated that they could meet ow required 1 February deadline in the Forward Area, provided airlift was furnished. This equipment, includ- ing pre-overseas instrumentation and operating crews, could be leased to the Air Task Group for between $175,000 and $225,000. With the ex- ception of development engineering for the B-47 antenna, the equipment was ready for operation. Staff members of the Air Task Group agreed that Raydist was superior equipment, but that SHORAN was considerably less expensive. On 23 Noven— ber the Directorate of Weapons Effects Tests of the Armed Forces Special 35—