Sheriff of Charleston County, James Cannon Jr., speaks to a group of defenders from the 628th Security Forces Squadron May 11, 2015 at Joint Base Charleston, S.C. Cannon’s presentation kicked-off the start of the 2015 National Police Week celebration. Each year police week is held to honor those who have made the ultimate sacrifice in the line of duty. Cannon, a retired colonel from the Air Force Reserve, shared a few words of wisdom and offered his gratitude to the men and women who protect the installation as well as the many people who work and live on Joint Base Charleston. Events for this year’s police week include a picnic, a 24-hour ruck march and a retreat ceremony. (U.S. Air Force photo/Senior Airman Jared Trimarchi)

Lt. Col. Warren Brainard, 628th Security Forces Squadron commander, hands off the Thin Blue Line flag to the next group of participants May 12, 2015 at Joint Base Charleston, S.C., during a 24-hour ruck march. The event to honor police officers killed in the line of duty was held as part of the 2015 National Police Week celebration. The ‘Thin Blue Line’ represents the sacrifices made by those who protect and serve. Events for this year’s police week include a picnic, a 24-hour ruck march, a golf tournament, a chili cook-off, motorcycle ride and a retreat ceremony. (U.S. Air Force photo/Senior Airman Jared Trimarchi)

Airman 1st Class Hunter Dudley and Lt. Col. Warren Brainard, 628th Security Forces Squadron commander, march with the squadron guidon and the “Thin Blue Line” flag May 12, 2015 at Joint Base Charleston, S.C., during a 24-hour ruck march. The event to honor police officers killed in the line of duty was held as part of the 2015 National Police Week celebration. The ‘Thin Blue Line’ represents the sacrifices made by those who protect and serve. Events for this year’s police week include a picnic, a 24-hour ruck march, a golf tournament, a chili cook-off, motorcycle ride and a retreat ceremony. (U.S. Air Force photo/Senior Airman Jared Trimarchi)

Airman 1st Class Hunter Dudley and Lt. Col. Warren Brainard, 628th Security Forces Squadron commander, cross a bridge with the squadron guidon and the “Thin Blue Line” flag May 12, 2015 at Joint Base Charleston, S.C., during a 24-hour ruck march. The event to honor police officers killed in the line of duty was held as part of the 2015 National Police Week celebration. The ‘Thin Blue Line’ represents the sacrifices made by those who protect and serve. Events for this year’s police week include a picnic, a 24-hour ruck march, a golf tournament, a chili cook-off, motorcycle ride and a retreat ceremony. (U.S. Air Force photo/Senior Airman Jared Trimarchi)