Pilots of aircraft approaching the Washington, D.C., area were again reminded on September 11 of the opportunity to fly one of two NextGen arrival procedures created to commemorate the 9/11 attacks on the nation’s capital in 2001. The arrivals also pay tribute to members of the U.S. military who served in Iraq and Afghanistan.

According gto a post on the FAA’s Facebook page, flights headed toward Ronald Reagan Washington National Airport from the northwest might use the FRDMM arrival, taking them over waypoints that include, “WEEEE,” “WLLLL,” “NEVVR,” “FORGT” and “SEP11.”

Flights from the southwest use the TRUPS arrival and cross waypoints “USAAY,” “WEEDU,” “SUPRT,” “OOURR” and “TRUPS.”

Depending on the runway configuration, aircraft might also pass through waypoints named “STAND” and “TGTHR,” or “LETZZ,” “RLLLL,” “VCTRY” and “HEROO.”

The arrival sequences were created last year as part of the FAA’s Metroplex initiative to bring greater efficiency to the airspace over several metropolitan areas around the U.S.

The FAA also published a “GARDN” fix over the area in rural west-central Pennsylvania where United Airlines Flight 93 crashed after passengers and crewmembers fought with hijackers for control of the airplane, preventing it from reaching its intended target of Washington, D.C.