A small square cloud came down, bounced off a wal,l made 3 crop circles and went into the sky

While walking across a bridge, going, south on the west side of US-Highway 19, I noticed a small glowing cloud high in the sky to the west moving down and towards me.  It went down far enough to go under the bridge but when it got within less than 20 feet of the bridge it bounced to the south and hit the concrete bridge support on the south side bouncing off, it came around in a circle several times repeating this bouncing many times.  
Then it stayed in that small area going in a circle and bouncing off the concrete for a while and several times hitting a small tree about two feet out from he bridge.  
Then it dropped into the swamp grass and made three crop circles about 20 feet across, it went up and down, staying down in the grass about 3 seconds at a time then going up about 1 foot above the grass. Then the cloud suddenly just rose up and went up to the west where it came from until it was too far to see.
The cloud glowed bright white and was about 2 feet wide and it looked square.  There was an outline of something inside barley visible.  The only time it make a sound was when it touched something.  While down in the grass it made a loud sound like a weed whacker.
Witness indicates that the date of the sighting is approximate.  PD