It's not uncommon for recruits to injure themselves over 28 weeks in academy, but this is the first time the training resulted in the loss of a cadet's life, Nelson said.
The other recruits were debriefed Monday and met with the police chaplain and other staff regarding the death. Officers wore black bands over their badges; department flags flew at half-staff.
Chase leaves behind a wife of four years and their two children, ages 2 and 3.
He hoped a career as a police officer would allow for more time with his family after a 15-year career in the Air Force, Nelson said. Chase left the Air Force in 2011; he had been stationed at Tinker Air Force Base.
Nelson said it's too early to say whether the incident will prompt training changes for future police academy classes. An internal investigation into the incident is ongoing, he said.