East Algoma OPP have charged two people after a barn was destroyed by fire in Huron Shores.   Inside the barn was hay and a horse trailer.  The barn and the contents were worth $150,000.    Shortly after the fire was set, OPP saw a young man and woman walking along Highway 17 and learned they were drinking in the barn.  They both face two counts of arson and single counts of mischief over $5,000.  The pair are also looking at break and enter charges.