I came across this today after I read dead fish are washing up in Lake Erie (http://www.huffingtonpost.com/2011/05/13/dead-fish-lake-erie-2011_n_861898.html).  It also mentions California had more sightings last month than any other state.

http://abcnews.go.com/US/video/ufos-reported-over-lake-michigan-13599377?cid=ESPNheadline