by Amelie BARON
A school gymnasium fills with hundreds of students seeking shelter from an earthquake and tsunami, with whistles at the ready in case they are trapped by rubble and need to be rescued.
It was only a drill but the exercise Friday is part of the Haitian government's efforts to improve its capacity to respond to natural disasters, six years after an earthquake in the capital Port-au-Prince killed more than 200,000.
Haiti's second-largest city of Cap Haitien is extremely vulnerable, located on the country's northern coast between two major seismic faults.