People gather flags from a truck to set up during the annual “Waves of Flags” on Saturday, Sept. 7, 2024, at Pepperdine University to honor victims of the terrorist attacks on Sept. 11, 2001. Approximately 350 alumni, students, university personnel and volunteers raised American flags, and a national flag for each foreign country who lost citizens that day, representing the 2,977 victims of the Sept. 11 attacks. The display of flags, a tradition started by students in 2008, will be on display through Sept.