Curtin Maritime Corp., Long Beach, Calif., has taken delivery of its new dredge DB Catalina, adding significant capacity to ...
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The Lockheed D-21 Mach 3 Drone
In the 1960s, Lockheed engineer Kelly Johnson was given an almost impossible task by the U.S. Air Force and CIA. He needed to create a spy drone with range, speed, and altitude capabilities that could ...
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