CHARLOTTE, N.C. (AP) — Saing Chhoeun was locked out of his Charlotte, North Carolina, home on Monday as law enforcement with high-powered rifles descended into his yard and garage, using a car as a shield as they were met with a shower of gunfire from the direction of his neighbor’s house.

As bullets flew just feet away, Chhoeun took out his phone and started live-streaming the standoff between officials and a man wanted for possession of a firearm by an ex-felon and fleeing to elude.

By the end of the ordeal, five people including four officers and the shooter were dead and more injured in the deadliest single-day incident for U.S. law enforcement since 2016.

The deadly shootout also illustrated how smartphone-wielding bystanders don’t always run for cover when bullets start to fly. Increasingly, they look to livestream their perspective of the attack. Experts say the reaction reflects the new role that bystanders play in the age of smartphones.