Participants of the National Police Week Warrior Ride drive down the Colonial Parkway in Yorktown, Va., May 19, 2011. The National Police Week event, which occurs each year, pays special recognition to those law enforcement officers, civilian and military, who have lost their lives in the line of duty for the safety and protection of others. (U.S. Air Force photo by Airman 1st Class Racheal Watson)(RELEASED)