Oct. 2, 2017. Officers Richard Cole and Brandon Engstrom return to University Medical Center, where they discover the fate of the gunshot victim they had rushed to the hospital the night before.

Victims begin to flood into University Medical Center Trauma. Officers Richard Cole and Brandon Engstrom return to the Route 91 Harvest festival grounds as part of a force protection team.

Las Vegas Metro Officer Richard Cole calls his roommate, Anna, who attended at the Route 91 Harvest festival on the night of Oct. 1, 2017.

After responding to the Route 91 Harvest festival shooting, officers Brandon Engstrom and Richard Cole rush a woman to the hospital before heading back to the scene.

Las Vegas police officers Richard Cole and Brandon Engstrom are called to the scene of the Route 91 Harvest festival as shots ring out on Oct., 2017.

On Oct. 1, 2017, a country music festival in Las Vegas was interrupted by a barrage of gunfire. In a five-part series launching Oct. 1, 2019, Las Vegas Review-Journal reporter Shea Johnson shares the stories of two Las Vegas police officers, a woman in dire straits and the night their lives intersected.