This just in....
www.cnn.com
Gunman opens fire in NASA building, police say
NASA evacuated a building at the Johnson Space Center in Houston after a person with a gun was seen and a shot was fired, a NASA spokeswoman said Friday. A SWAT team has been sent to the scene, a source told CNN. One report indicates the suspect has barricaded himself in a building. NASA spokesman James Hartfield told CNN gunshots were heard in the building. He added NASA security rules do not allow weapons on the property.