— Thornton Police Dept (@ThorntonPolice) November 2, 2017Stephens said he did not see where the shooting had come from and did not see anyone struck by bullets. Local NBC television affiliate 9NEWS reported that a woman whose son was in the Walmart had told her that he had heard about 30 gunshots and was still inside.A video posted on Twitter showed the Walmart, which is situated in a large complex of big-box stores and other retail outlets adjacent to US Interstate 25, apparently empty except for police officers with guns drawn.