A member of the 628th Security Forces Squadron places a yellow rose during a National Police Week ceremony May 20, 2016, at the base flag pole on Joint Base Charleston – Air Base, S.C. In honor of Police Week, the 628th SFS collaborated with multiple base agencies to conduct various events to remember and celebrate their fallen brothers and sisters in law enforcement. (U.S. Air Force Photo/Airman 1st Class Haleigh Laverty)

Joint Base Charleston Color Guard members lower the flag for Retreat during the National Police Week ceremony May 20, 2016, at the base flag pole on Joint Base Charleston – Air Base, S.C. In honor of Police Week, the 628th Security Forces Squadron collaborated with multiple base agencies to conduct various events to remember and celebrate their fallen brothers and sisters in law enforcement. (U.S. Air Force Photo/Airman 1st Class Haleigh Laverty)

Joint Base Charleston leadership stand for a moment of silence to honor the fallen defenders during the National Police Week ceremony May 20, 2016, at the base flag pole on Joint Base Charleston – Air Base, S.C. In honor of Police Week, the 628th SFS collaborated with multiple base agencies to conduct various events to remember and celebrate their fallen brothers and sisters in law enforcement. (U.S. Air Force Photo/Airman 1st Class Haleigh Laverty)

A Charleston police officer holds a single yellow rose in remembrance of his fellow co-worker, Detective Sergeant Christopher Kelley. A yellow rose is often presented to honor and remember a friendship. In honor of Police Week, the 628th SFS collaborated with multiple base agencies to conduct various events to remember and celebrate their fallen brothers and sisters in law enforcement. (U.S. Air Force Photo/Airman 1st Class Haleigh Laverty)

Airman from the 628th Security Forces Squadron prepare to present a three-volley salute to honor the fallen men and women in law enforcement during the National Police Week ceremony May 20, 2016, at the base flag pole on Joint Base Charleston – Air Base, S.C. In honor of Police Week, the 628th SFS collaborated with multiple base agencies to conduct various events to remember and celebrate their deceased brothers and sisters in law enforcement. (U.S. Air Force Photo/Airman 1st Class Haleigh Laverty)

Chief Master Sergeant Robert Grimsley delivers comments as the guest speaker during the National Police Week ceremony May 20, 2016, at the base flag pole on Joint Base Charleston – Air Base, S.C. In honor of Police Week, the 628th SFS collaborated with multiple base agencies to conduct various events to remember and celebrate their fallen brothers and sisters in law enforcement. (U.S. Air Force Photo/Airman 1st Class Haleigh Laverty)

A 628th Security Forces Airman guards a memorial honoring fallen service members during Police Week at Joint Base Charleston, S.C. May 18, 2016. A 24-hour silent vigil was held for nine law enforcement Airmen who made the ultimate sacrifice. (U.S. Air Force photo/Staff Sgt. Jared Trimarchi)

A memorial honoring fallen security service members is displayed during Police Week at Joint Base Charleston, S.C. May 18, 2016. A 24-hour silent vigil was held for nine law enforcement Airmen who made the ultimate sacrifice. (U.S. Air Force photo/Staff Sgt. Jared Trimarchi)

A 628th Security Forces Airman guards a memorial honoring fallen security service members during Police Week at Joint Base Charleston, S.C. May 18, 2016. A 24-hour silent vigil was held for nine law enforcement Airmen who made the ultimate sacrifice. (U.S. Air Force photo/Staff Sgt. Jared Trimarchi)