Porter-area historical tornado activity is near Oklahoma state average. It is 167% greater than the overall U.S. average.
The Space Shuttle program, officially called the Space Transportation System (STS), was the United States government's manned launch vehicle program from 1981 to 2011, administered by NASA and officially beginning in 1972.
As Discovery prepares for her last space shuttle launch, NASA's human spaceflight program shifts from space station ferry-service to missions to the moon, Mars, and beyond. The space shuttle Discovery prepares for launch at Kennedy Space Center's launch pad 39A, in Cape Canaveral, Fla., Feb. 23.