KINGSTOWN, St Vincent (CMC) — Regional aviation authorities continued search-and-rescue operations on Sunday after a small aircraft travelling from St Vincent and the Grenadines to Tobago disappeared over the southern Caribbean Sea. The Dominican Republic-registered Beech 58P Pressurised Baron aircraft, registration HI-1145, departed Argyle International Airport in St Vincent at 11:52 am on Friday and was scheduled to arrive at the ANR Robinson International Airport in Tobago. Authorities said air...