U.S. Marines assigned to U.S. Marine Corps Band, Quantico,

U.S. Marines assigned to U.S. Marine Corps Band, Quantico, Va., participate in the 15th annual New York Police Department (NYPD) Emerald Society Pipes and Drums Memorial Parade and Ceremony, New York City, N.Y., Sept. 9, 2016. Once a year, local, national, and international law enforcement, first responders, fire departments, and military bands host a parade and ceremony at the NYPD memorial. The ceremony serves to honor and remember the sacrifice of the local and national public officials that lost their lives during the attacks on Sept. 11, 2001, and unite those that rendered aid during the recovery. (U.S. Marine Corps photo by Cpl. Timothy Turner)