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Police cordon in place as helicopter circling above Plymouth
20 小时之前 · At least three police vehicles are at the scene and the National Police Air Service helicopter has been spotted circling above the Devonport and Mount Wise areas.
Lyndon B. Johnson - Wikipedia
20 小时之前 · Johnson drew crowds to fairgrounds with his rented Sikorsky S-51 helicopter, dubbed "The Johnson City Windmill". ... Our aim is not only to relieve the symptoms of poverty …
Robot deployed at 1,000 ft mid-air for high-rise construction task
6 小时之前 · Robot completes critical tasks at 1,000 ft mid-air, 300% more efficient than manual labor. For façade brackets, the manual process typically requires two to four workers.