How could this happen?!! It was a GUN FREE ZONE!!!!!! Shockingly, the media sorta missed this one------Patient kills caseworker in Darby, Pa., hospital; doctor then shoots patient, authorities say

Patient kills caseworker in Darby, Pa., hospital; doctor then shoots patient, authorities say | lehighvalleylive.com:
"The prosecutor identified the caseworker killed at Mercy Fitzgerald Hospital as Theresa Hunt, 53, of Philadelphia. Hunt had accompanied Plotts to an appointment with Silverman at a psychiatric crisis center adjacent to the hospital in Darby, just southwest of Philadelphia, authorities said.
"When the caseworker was shot, (Silverman) crouched down behind the desk to avoid him being shot," Whelan said. "He was able to reach for his weapon, and realizing it was a life or death situation, was able to engage the defendant in the exchange of gunfire."
A struggle ensued and spilled out into the hallway, Whelan said.
Another doctor and a caseworker jumped in to help Silverman and secure Plotts' weapon, he said."
.......It is not known, however, if that is why Silverman was armed, apparently against hospital policy.