At first, Dorothy Vong assumed it was a drill — just like all the others at her work.
At the Inland Regional Center, where she’s a nurse, the staff works with clients and parents of clients who are sometimes angry. They have active-shooter drills every month or so.
“Drill started,” she texted her husband, Mark, around 11 a.m.
She walked to a window nearby and filmed a video as law enforcement sprinted toward the building.
“Oh, that is scary,” a voice says calmly in the background.
“They’re all geared up!” someone else says. “Rifles and everything!”
In the background, someone laughs — they still didn’t know.