Two officers involved in a shooting that left the suspect and a firefighter dead have been cleared of any wrongdoing in Wisconsin. Outagamie County District Attorney Melinda Tempelis said Appleton Police Sergeant Christopher Biese and Officer Paul Christensen were justified in shooting a suspect to death nearly a month to the day after the incident. Body camera footage released shows the chaotic scene that unfolded on the evening of May 15 2019 when police, firefighters and paramedics responded to a man who they believed had a seizure on a bus arriving in the town. Ruben Houston, 47, was traveling back to his home in Wausau, Wisconsin, when he was found unresponsive on the bus. First responders discovered that he had overdosed on opioids and administered two shots of Narcan. In body camera video captured by Biese, Houston can be seen getting up before he begins to walk away, which is when officers noticed “a bulge” on his right side. Houston claimed it was his phone, but then he reached for his .380 semiautomatic weapon and shot at the officers. “I heard like a pow, and I thought it was a lawnmower backfiring,” witness Tori Mourning told ABC News affiliate WBAY. “I heard it again, I looked up because we can see the bus stop from my bedroom window. I looked at the tree, I saw the guy shoot a female, and she went down, and another shot was fired, and there was another male and he went down, and then I saw the shooter flee.” Mitch Lundgaard, a 14-year veteran of the Appleton Fire Department, was shot in the back after offering Houston a cot to lay down on outside of the bus. He later died at the hospital. Christiansen was also shot in the lower body, but immediately returned fire. He was released from the hospital the next day. Authorities believe bystander Brittany L. Schowalter, 30, was used by Houston as a human shield. She was struck by the officer’s gunfire but is now in stable condition.