UPDATE 3-Delta rockets retired with launch of US reconnaissance satellite

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UPDATE 3-Delta rockets retired with launch of US reconnaissance satellite

UPDATE 3-Delta rockets retired with launch of US reconnaissance satellite The U.S. Space Force and a Boeing-Lockheed joint venture sent a secret reconnaissance payload to orbit on Tuesday atop a Delta IV Heavy rocket, the last flight of a workhorse launch vehicle brand that has logged nearly 400 missions dating back to 1960. The United Launch Alliance-owned rocket, standing roughly 23 stories tall, blasted off from Cape Canaveral Space Force St…