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Isobel Porteous

As seen in: Lawfare, War on the Rocks
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Articles by Isobel Porteous

GPS and the Limits of Control

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By Isobel Porteous, Matt Kaplan Verified
| Lawfare Verified
Right now, a 31-satellite constellation orbits Earth in medium Earth orbit, 20,000 kilometers above us. Each spacecraft is broadcasting a signal with the same strength as that of a residential light bulb. By the time it reaches Earth, that signal has attenuated to a whisper. Miraculously, these whispers are heard by6 billion users every day and can be used to pinpoint your location to within three to five meters. Many of us cannot imagine a world without the Global Positioning System (GPS).
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When the world's at stake, go beyond the headlines.

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By Madeline Field, Isobel Porteous
| War on the Rocks Verified
In May 1953, in the desert west of Idaho Falls, a crew powered up the world’s first naval nuclear propulsion system. What made it possible was daringly aggressive innovation: Adm. Hyman Rickover insisted that the Submarine Thermal Reactor Mark I be built to exactly the specifications that would later be required inside a submarine.
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The Front Door Problem in National Security Space

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By Madeline Field, Isobel Porteous
| War on the Rocks Verified
In July, the team at EarthTraq, a dual-use space company, received an email suggesting we “go through the Space Force Front Door process.” It seemed simple. We offer clear applications for pressing U.S. national security needs. The front door appeared to be the place to learn about capability gaps and seek funding to address them.
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