ScienceNow has a preview (arggh!) of a research article from Journal of Coastal Research comparing coral abundance and diversity from areas in the former Vieques Island military range in Puerto Rico, to areas outside the range and areas in nearby marine parks.
Bottom line ?
Though there are areas of extreme impact (bomb craters anyone?) the researchers found the area as a whole was in better shape than the nearby marine park areas. The chief difference appears to be island development - Vieques Island has almost none.
"The take-home message seems to be that the most glaring problems--like bombing--might not be as serious in the long term as the quiet or silent problems, like runoff and development,"If anyone can find the article online please let me know...