For years, environmentalists have asked the questioned – what if the Chalillo Dam breaks? Well on Thursday they’ll get somewhat of a partial answer because there will be a flood simulation exercise in San Ignacio and Santa Elena. The National Emergency Management Organization along with Belize Electric Company Limited and the Cayo District Emergency Committee will test the preparedness of schools, families, but more importantly the early warning sirens and evacuation system that have been the subject of contention between BECOL and environmentalists in the area. The simulation starts at 7 am on Thursday.