Federal laws regarding the proper display and treatment of the U.S. Flag are detailed in Title 36 of the United States Code. The flag is displayed at half mast at federal buildings by order of the President upon the death of a public official. An executive order from a Governor directs the half mast display of state and national flags at state facilities within their jurisdiction.
n 1954, President Eisenhower issued the following standards for half mast displays. This serves as a customary guide for those outside the jurisdiction of executive orders who wish to show their respects. Common observances are:
U.S. House of Representatives. "United States Code: Title 36 - Patriotic Societies and Observances." Washington, DC: U.S. Government Printing Office.