Kim Potter’s trial has entered its sixth day of testimony.

Sergeant Mike Peterson again took the stand.

Yesterday, Peterson performed a taser spark test for the jury.

He was cross-examined by defense attorney Paul Engh today.

Peterson said that they do their best to train officers.

However, they cannot teach them how to respond in every situation.

"We do not deal in absolutes because no incident in this world is ever forecasted,” Peterson said.

However, law school professor Seth Stoughton felt that Potter’s use of force was “excessive and inappropriate.”

He literally wrote the book on police use of force, called “Evaluating Police Uses of Force.”