What did Phillips fear according to Police in Texas?

Police in Texas say the gunman who killed a hostage at the NASA Space Center in Huston on Friday and then shot himself was facing a review of his performance of work, and apparently feared be would be sacked. The man, William’ Phillips, was said to have bought a revolver and ammunition on the same day that be printed an e-mail from a man be later took hostage, David Beverly, detailing his shortcomings. Phillips confronted Beverly and shot him .several times as be tried to barricade himself in his office. A second hostage, a woman, was bound with tape but escaped without injury.