Pretty crazy brother, slow day at the firehouse (a good thing.) I am a volunteer wildland firefighter out here Wyoming way.I don't think i posted this before. Here is mavic, flying from outside to inside and through a building while the pilot is completely blind except for fpv........
I don't think the mavic is ideal for indoor flying or for active shooter surveillance. You need a smaller drone like the sharper image one but obviously made by dji and 10 times the price.