Hello @mshanaghan yes, you can have your data (like fire extinguishers and say, fire hydrants) in the same feature class. Floor-awareness is set on individual layers. You can add your feature class to the map and create a definition query to only show fire extinguishers. Following that, you can set the Floors property to the appropriate column that has floor related values (say, LEVEL_ID). You can add the same feature class to the map again but this time set the definition query to only show fire hydrants. These features would not have any floor related information so no need to set the Floors property.
Hope this helps.
