At our range: Associated Gun Clubs of Marriottsville, located in Baltimore County, Maryland --- has a range rule --- that all kids 14 & under, shall be supervised at all times on the gun range. Some kids are fascinated with guns...so much that they can approach a gun during a cease fire --- rack the bolt --- thusly putting a live round into the chamber and firing off a round during a cease fire.
Proper range etiquette and the rules specify that after a cease fire is called on the firing line: all firearms shall be unloaded --- actions open, magazines removed, muzzles pointed downrange {unless muzzles pointed upwards vertically on a gun rack}; with ECI's {empty chamber indicators} inserted into the chamber of the gun. On muzzleloaders: muzzles shall be pointed vertical during a ceasefire; with the subsequent command by the RSO's during the ceasefire, when the line is called safe: No Handling of Firearms During a Ceasefire