On October 4 , the United States prepared the aircraft carrier , the hospital ship — which previously aided thousands in the wake of the 2010 Haiti earthquake — and the transport dock for relief operations in Haiti . and were later relieved by , along with the 24th Marine Expeditionary Unit . United States Southern Command also deployed 100 troops with 9 helicopters to the Cayman Islands to prepare for relief work . Initial estimates indicated at least 350,000 people were in need of assistance
2010 Haiti earthquake
2010 Haiti earthquake
Hurricane Matthew