"For 55 officers involved in fatal shootings this year, it wasn’t their first time"
https://www.washingtonpost.com/local/public-safety/for-55-officers-involved-in-fatal-shootings-this-year-it-wasnt-their-first-time/2015/12/22/435cb680-9d04-11e5-a3c5-c77f2cc5a43c_story.html?hpid=hp_hp-top-table-main_coprepeaters-235pm%3Ahomepage%2Fstory