Integrated Sensor is Structure (ISIS), is a prototype airship that could hover at an altitude near space where it would be able to track ground and aerial targets for up to a year at a time. Image Credit: Raytheon
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Integrated Sensor is Structure (ISIS), is a prototype airship that could hover at an altitude near space where it would be able to track ground and aerial targets for up to a year at a time. Image Credit: Raytheon |
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