Timeline of events
The situation began at 1:00 p.m. (UTC-5) when gunman William Phillips entered a conference room, pointed a .38 or .357-caliber snub-nosed revolver at one person, and ordered everybody else to leave. He immediately confronted David Beverly about his job review, saying "You're the one who's going to get me fired." The two talked for several minutes. Then, at approximately 1:40 p.m., three gunshots were heard. Police said Beverly was initially shot twice, but he was still alive. Phillips left and then returned seconds later to shoot Beverly twice more.
Phillips then took Fran Crenshaw, who happened to be in the area, hostage and bound her to a chair with duct tape. Phillips barricaded himself and Crenshaw inside the second floor of Building 44 for the next three hours. During this, Crenshaw attempted to calm Phillips, with whom she was reported to have had a positive relationship. Later, Crenshaw was able to get herself out of the tape and alert authorities about what was happening. Meanwhile, SWAT teams surrounded the building. Building 44 as well as four other nearby buildings were evacuated and NASA employees in other buildings were ordered to remain inside their buildings, but were later told they were free to go at the end of the workday. A nearby school, Space Center Intermediate School, was temporarily placed on lockdown.
The incident ended at 5:00 p.m. as the SWAT teams attempted to communicate with Phillips when the gunman committed suicide with a single shot to the head. Crenshaw was taken to St. John Hospital by ambulance and then released for questioning by the Houston Police Department. She was physically unharmed and walked out of the hospital on her own.
A person identified as David Beverly was shot four times to the chest and killed. He was a 62-year-old electrical parts specialist employed by NASA. Fran Crenshaw, a contract worker with MRI Technologies, was held hostage by Phillips. During the incident she attempted to calm Phillips, and eventually escaped her bonds.