US Air Force
Early on Sunday morning, for parts of Florida along the Atlantic coast, the tranquil calm was broken by a sonic boom. Residents didn’t know it at the time, but the US Air Force’s secretive X-37B uncrewed space plane had just returned to Earth after 718 days—the longest of its four missions into orbit.
“This mission once again set an on-orbit endurance record and marks the vehicle’s first landing in the state of Florida,” said Lt. Col. Ron Fehlen, X-37B program manager. “We are incredibly pleased with the performance of the space vehicle and are excited about the data gathered to support the scientific and space communities. We are extremely proud of the dedication and hard work by the entire team.”
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Source: Ars Technica – The Air Force’s secretive spy plane returns after 718 days in space