Word: radars
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Dates: during 1960-1969
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...Safeguard system has four key elements. PAR (perimeter acquisition radar) detects an enemy ICBM at long range some time after it has been launched, calculates its path, and then passes the missile track along to the less powerful but much more complex MSR (missile site radar). MSR then directs two types of ABMs against the incoming warheads. The long-range Spartan is designed to make an intercept above the atmosphere, at altitudes between 200 and 400 mi. The smaller Sprint would seek out and destroy warheads that penetrated the Spartan screen by intercepting them within 40 miles of the target...
...question about how well the U.S. ABM would work-or if it would work at all-turns on the vulnerability of its radar guidance. Without it, Spartan and Sprint would journey blind. A nuclear blast outside the atmosphere can create radar blackouts lasting critical tens of seconds, as both U.S. and Soviet tests demonstrated in the early 1960s. A "precursor warhead," launched just ahead of a missile attack and detonated as a kind of nuclear smoke screen for the following ICBMs, could black out U.S. perimeter acquisition radar and disrupt the ABM defense...
Responding in kind, Israeli commandos raided an Egyptian coast guard station at Ras Adabiya, seven miles southwest of Suez. They claimed 15 Egyptians killed and a small radar station destroyed, at a cost of two men wounded. In a second raid, this time on Jordan, Israeli commandos blasted the $30 million East Ghor irrigation duct...
...anticipated. Most food flights flown by civilian crews have been grounded until flight rules can be worked out that are agreeable to both combatants. Planes that do make the flight are targets for the newly unleashed MIGs or for antiaircraft fire that appears to be directed by five radar-equipped Russian trawlers lying off the coast. Flying into Uli aboard one such flight last week, TIME Correspondent James Wilde found Biafrans grim. The struggling country had a good harvest recently, but supplies will last no longer than three months. Food rationing has already begun...
...Minuteman version, with a range of 7,500 miles, carries up to three warheads (each under one megaton) and some chaff that is released to confuse enemy anti-ballistic missile radar. Present plans call for deployment of 500 MIRVed Minuteman Ill's, in addition to 500 Minuteman II's with single warheads. All would be housed in 90-ft.-deep silos, located at least seven miles apart to prevent an enemy warhead from destroying two sites...