Though Jessie Wilczewski had only been working at the Chesapeake, Virginia, Walmart for a few days, her Tuesday night shift started like all the rest, with a routine team meeting in the break room.

But moments after that meeting began, Wilczewski found herself face to face with her team leader, who held a gun to her forehead after having shot her coworkers.

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CNN's Caroll Alvarado, Curt Devine, Amanda Jackson, David Williams and Holmes Lybrand contributed to this report.