At the Police Training Academy in Madison, Wis., there are 46 recruits in two groups for the class of 2022. Nikki Acker, 36, is one of nine female trainees in the group who are new to policing.

Part of their training today is how to handcuff a person. Their shoes squeak on the blue floor mats as they practice.

Acker used to be a teller at a credit union and worked in property management. She's 5'4" and never imagined being a police officer until she got a job working as a clerk in the records department.

"I guess I had in my mind the stereotype of these big guys with military backgrounds," she laughs, "and once I started learning more and getting involved in reading reports and seeing the calls, I learned that they're so much more than that."