On December 29, 2019, David Ironhorse, a 64-year-old Native American man, was found with multiple gunshot wounds in the hallway of a second-floor apartment at 851 East Minnesota Street in Rapid City, South Dakota. Officers who arrived after residents reported rapid gunfire and shouting heard rounds still being fired; extensive bullet damage was later documented throughout the second floor and shell casings and a Springfield Armory M1 rifle were recovered.

Authorities identified Patrick Alden as the shooter. Alden fired at officers as they approached, striking a patrol car and advancing with a high-powered, military-style rifle. An officer engaged Alden in the north stairwell and struck him multiple times; Alden was pronounced dead at the scene. Officers rendered aid to Ironhorse and carried him to an ambulance, but he died from his injuries.

No arrests were announced because Alden was killed during the officer-involved shooting. An 81-year-old resident, Thomas Trout, also died after being evacuated; officials attributed that death to a medical issue complicated by the evacuation. Did anyone in Rapid City see or hear anything that afternoon that could shed more light on what happened?