<Li> INSARAG marking squares should be written in day - glo orange . </Li> <P> In the United States, the Federal Emergency Management Agency (FEMA) use a different marking system on searched structures, as follows: </P> <Ul> <Li> A single diagonal slash indicates that a search in the building is in progress . This is used to indicate searcher locations and to avoid duplication of the search effort . </Li> <Li> An X inside a square means "Dangerous - Do Not Enter!" </Li> <Li> An X with writing around it means "Search Completed", with the time (and the date if appropriate) written above the X, the team conducting the search written to the left side of the X, the results of the search (number of victims removed, number of dead, type of search such as primary or secondary) written below the X, and any additional information noted about the structure to the right of the X . </Li> </Ul> <Li> A single diagonal slash indicates that a search in the building is in progress . This is used to indicate searcher locations and to avoid duplication of the search effort . </Li>

What do the x's mean on houses in new orleans
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