On the evening of April 9, 2021, a routine traffic stop in Grundy Center, Iowa, escalated into a violent confrontation that left a veteran officer dead. A Grundy Center officer attempted to stop a vehicle driven by Michael Thomas Lang; Lang fled, led officers on a pursuit and was confronted southeast of the city. After exiting his car he assaulted the officer, disarmed him of a Taser and radio, put him in a chokehold and repeatedly dared the officer to shoot.

Lang was tracked to 305 G Avenue, where his father told officers the house contained multiple firearms, including a shotgun. A tactical entry team that included Iowa State Patrol Sergeant James K. Jim Smith, 51, a 27-year veteran, entered the home through the garage at about 8:55 p.m. They came under gunfire while clearing the upstairs; Sergeant Smith was struck and later died at a hospital. Lang barricaded himself inside the residence and exchanged gunfire with officers before being taken into custody later that night.

What details about the sequence of events or the standoff might help clarify what happened that evening for those who were there or have information?