Video: Orion flight preps

Fueled segments of the solid rocket boosters that will lift off on the first flight of NASA’s Space Launch System have arrived at the Kennedy Space Center in Florida, but officials will hold off on stacking the boosters until the SLS core stage completes a crucial test-firing later this year.

Employees and flight hardware for NASA’s Space Launch System and Orion spaceship were mostly spared after a strong tornado struck the agency’s Michoud plant in New Orleans on Tuesday, but crews planned to begin repairs immediately to plug holes in buildings housing parts and tools to build the new mega-rocket.

Boosted to an altitude of 3,604 miles by a Delta 4 rocket, NASA’s Orion deep space exploration vehicle fell back to Earth Friday in the program’s maiden voyage, slamming into the atmosphere at nearly 20,000 mph, enduring a hellish 4,000-degree re-entry and settling to a Pacific Ocean splashdown to wrap up a critical unmanned test flight.