US flags are flying at half-staff on May 15 to honor fallen and injured law enforcement officers during Peace Officers Memorial Day.

US flags are flying at half-staff on May 15 to honor fallen and injured law enforcement officers during Peace Officers Memorial Day.

Flags at half mast today reason explained: Discover why flags are at half-mast in the U.S. today, honoring Peace Officers Memorial Day and remembering Nebraska's Staff Sergeant…