More officers hit by gunfire in Planned Parenthood attack than any other US incident since '13

FILE - This undated file photo provided by the University of Colorado at Colorado Springs shows officer Garrett Swasey, who was killed in a shooting at a Planned Parenthood clinic in Colorado Springs, Colo., Friday, Nov. 27, 2015. Police suffered their highest casualty count in more than two years in the Colorado Springs Planned Parenthood shootings, a reflection of the danger officers face in mass shootings. (University of Colorado at Colorado Springs via AP, File) (The Associated Press)

FILE - This undated file photos provided by the El Paso County Sheriff's Office shows Colorado Springs shooting suspect Robert Lewis Dear. The gunman burst into a Planned Parenthood clinic Friday, Nov. 27, 2015, and opened fire, launching several gun battles and an hours long standoff with police as patients and staff took cover. The gunbattle ultimately claimed the life of one officer and injured a total of five, the highest police casualty count in a single incident in the U.S. in two years and a reflection of the danger that mass shootings pose to police. (El Paso County Sheriff's Office via AP, File) (The Associated Press)

DENVER – Police suffered their highest casualty count in more than two years in the Colorado Springs Planned Parenthood shootings, a reflection of the danger officers face in mass shootings.

One officer was killed and five others were shot and wounded in the Nov. 27 attack.

A recording of police radio transmissions depicts a chaotic scene, with officers trying to find the gunman and save injured civilians while under deadly fire themselves.

Experts say that's typical in a mass shooting and makes things worse for officers. Some shooters don't care whether they live or die, and officers often confront the gunman without backup and without much information.

Pete Blair, a criminal justice professor at Texas State University, says police are wounded in about 25 percent of cases like the Colorado Springs shooting.