I was curious about the "large incident" and found a news article about this "officer involved shooting." It turns out that there was a police chase involving a vehicle suspected in a series of crimes based out of Cedar Rapids, IA:
A trooper spotted the vehicle, a Dodge Charger, driving south on Interstate 380 near the Penn Street exit. The car did not pull over when the trooper tried to get the car to stop, the DCI said.
Johnson County Sheriff’s deputies joined the chase, which continued south on Highway 218. The car exited 218 and headed east on Highway 22.
The car pulled into the Kum & Go off Highway 22, where it hit a Johnson County deputy’s car, causing a state trooper to fire his weapon once, authorities said.
There were no injuries reported.Three people were taken into custody and are currently in jail while they complete their investigation and ponder criminal charges.
There was a reference to crime scene tape being placed around several gas pumps and a vehicle. I'm assuming that this was to protect evidence, as opposed to indicate an area of damage.