CAPE CANAVERAL, Fla. — Sonic booms awakened some Space Coast residents Sunday morning as an unmanned military space plane made its first touchdown at Kennedy Space Center, completing a nearly two-year, mostly classified mission.

The Air Force shortly after 8 a.m. reported that the experimental X-37B Orbital Test Vehicle had landed safely on NASA’s former space shuttle runway. The exact time was not confirmed.

Video posted by the Air Force from a runway camera showed the winged craft whiz overhead, touch down on wheels on the runway’s north end and race down the three-mile, concrete strip before rolling to a stop in daylight.

Crews wearing protective suits for hazardous operations met the mini-shuttle that measures about 29 feet long — about a quarter the length of NASA’s shuttle orbiters — with a nearly 15-foot wingspan.

The fourth X-37B mission, known as OTV-4, launched from Cape Canaveral Air Force Station atop a United Launch Alliance Atlas V rocket on May 20, 2015, for a total mission duration of 718 days — the most yet by about six weeks.

“The landing of OTV-4 marks another success for the X-37B program and the nation,” said Lt. Col. Ron Fehlen, X-37B program manager, in a press release. “This mission once again set an on-orbit endurance record and marks the vehicle’s first landing in the state of Florida. 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.”

The landing was the first on KSC’s Shuttle Landing Facility by a spacecraft returning from orbit since Atlantis touched down nearly…