Integrated Operational Nuclear Detection System (IONDS) was an American early warning system, monitoring the territories of hostile countries (such as China) for signs of nuclear tests or launches, using a system of satellites in Earth's orbit.[1]
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- ↑ The Switchboard terminal entries; Central terminal, DEFCON Status - 2077: "281632RJAN77 ANCHORAGE ALL CLEAR **DEFCON 3** [...]