![Philip Beaver at his home in Cherry Hills Village. Sept. 7, 2021.](https://www.cpr.org/cdn-cgi/image/width=3840,quality=75,format=auto/https://wp-cpr.s3.amazonaws.com/uploads/2021/09/210907-PHILIP-BEAVER-911-SEPTEMBER-11TH-CHERRY-HILLS-VILLAGE-KEVINJBEATY-02.jpg)
When hijackers flew a plane into the Pentagon 20 years ago, 184 people died. Among the survivors was Phil Beaver, then a lieutenant colonel working at the Defense Department. Today he teaches at the University of Denver and lives in Englewood. He worries that 9/11 will be forgotten by a younger generation.