U.S. Air Force Lt. Col. retired Don Arias, speaks to members from the 601st Air Operations Center and 1st Air Force about his memories of the events of 9/11 during a memorial service on September 10, 2021 at Tyndall Air Force Base, Fla. The 601st AOC held a ceremony to honor the memory of those who lost their lives as a result of the tragic events of September 11, 2001 (Air National Guard photo by, Master Sgt. Regina Young)