Louisville police officer Michael Campbell testified that police spent an unusually long amount of time knocking at the door of Breonna Taylor on the evening of March 13, 2020.
"We knocked for a really long time," he said during Wednesday's testimony, adding that Campbell and his colleagues then, "began announcing that we were the police."
Traditionally cops might knock for anywhere between "eight to 30 seconds," said Campbell.
However, on the evening in question, an upstairs neighbor emerged from his home, disrupting traditional police protocol.
It was Brett Hankinson, the officer standing trial, who ultimately coerced the neighbor back into his home, Campbell said.
"Detective Hankinson got him to go back in," said Campbell. "He was really assertive."
However, this process of engaging with the neighbor delayed the procedure.
"We knocked for a while, some time passes ... it got louder and louder and louder. Then, that person came out. We engaged ... talking to that guy, then we went back to knocking some more," Campbell said, adding, "that seemed like a really long time to me."
When asked by Stew Mathews, who represents Hankison, if such a delay was dangerous in its nature, and Campbell testified in the affirmative.
"In hindsight, yes," said Campbell. "But at the time, we didn't anticipate this happening."
What followed was a flurry of events which included the breaching of the front door, and a collection of gunshots, one of which injured fellow officer Jonathan Mattingly.
During the scene, which Cambell described as "chaotic" and "very loud," he noted that he did not observe Hankinson discharging his weapon.
"I never saw him fire a shot," Campbell said, adding that Hankinson did get "on the radio, and said that they were shooting at us with a rifle."