Armed officer failed to act in Florida high school shooting

The argument that having an armed person in high schools could potentially stop school shootings has been thrown into doubt by news that an armed officer did nothing to stop the gunman who killed 17 people in Florida.
The officer has now resigned after being suspended without pay.
Police say Scott Peterson who was stationed at the school as a resource officer stayed outside Parkland Highschool and did not engage accused gunman Nikolas Cruz as he went on a rampage with an assault rifle on February 14th.

Broward County Sheriff Scott Isreal telling the Associated Press, Peterson was suspended without pay and placed under investigation, then chose to resign.

Israel was asked what Peterson should have done and replied, "went in, addressed the killer, killed the killer"

The news comes as President Donald Trump said he would consider arming teachers adding that would stop any shooter in their tracks.