Missouri now has a Blue Alert system, which will alert people statewide when a law enforcement officer is killed or wounded. The law was recently signed by Gov. Eric Greitens.When a suspect is on the run after shooting a law enforcement officer, either killing the officer or wounding him, the public will be notified by the system, and it may help in apprehending a suspect. It is similar to the Amber Alert system, which helps locate missing children.The measure also adds museums visited by children under 18 to the list of public places where sex offenders are banned. The law also provides for stiffer penalties for assaults committed against law enforcement officers.The law also creates a crime of illegal re-entry. When a person is deported from the U.S. for committing a crime and returns to the country and commits a felony, they also would be guilty of illegal re-entry in Missouri. The offense would be a Class C felony punishable by three to seven years in prison.When the law goes into effect, Missouri will be the 28th state to have a Blue Alert system.Any system that helps to apprehend a suspect in a crime against a law enforcement officer has merit. We applaud the General Assembly and the governor for taking this action.