Once off the bus, video shows Leeman tripping Burnley Jr. and all three people falling to the ground.
Kraemer testified she didn't know at the time who was responsible for turning the struggle into a ground fight.
"It was completely uncontrolled. The force that drove us to the ground was very aggressive and very forceful. So in my mind, (Burnley Jr.) was still out of control," Kraemer said.
During cross-examination Friday, Kraemer told prosecutor Jim Griffin she recalled Burnley Jr. placing his left arm underneath his body and reaching for his waistband seconds before she decided to pull her firearm out of the holster and fire a single, .45 caliber round into his back.
Kraemer remembered she then holstered her firearm before she and Leeman placed Burnley Jr. into handcuffs.
Griffin asked Kraemer how come she never searched Burnley Jr. for a weapon after he'd been placed into handcuffs.
"What you said (Thursday) was you were on training autopilot, right? Those are the words you used?" Griffin asked.
"Yes," Kraemer replied.
"Does this training autopilot say to put one shot into this guy, who might have a weapon, re-holster your weapon, and never tell your partner this guy might have a gun? Is that the training they give you, officer?"