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.
[ 97 ] NASA's first four manned spaceflight projects were Mercury, Gemini, Apollo, and Skylab. As the first U.S. manned spaceflight project, Project Mercury-which included two manned suborbital flights and four orbital flights-fostered Project Apollo and fathered Project Gemini.. The second manned spaceflight project initiated was the Apollo manned lunar exploration program.