2007 Colorado YWAM and New Life shootings

In the early hours of December 9, 2007, 24-year-old Matthew John Murray opened fire at the Youth With A Mission training center in Arvada, Colorado, killing two and wounding two others before escaping. Later that afternoon, he attacked the New Life Church in Colorado Springs, Colorado, with a number of firearms, killing two more people and injuring three before being shot by Jeanne Assam, a member of the church's safety team.

Source: Wikipedia — 2007 Colorado YWAM and New Life shootings (CC BY-SA 4.0)