The United States Department of Homeland Security, the US Embassy in Bridgetown and the island’s National Security Council are conducting wide-ranging investigations into an alleged major security breach at the Grantley Adams International Airport (GAIA).And a Defence Policy Specialist and National Security Agency analyst at the University of Miami has warned that travellers from Barbados could face tougher surveillance measures when they reach US shores.The controversy follows the arrest of retired police officer Cameron Hinds, who was found with a revolver and five rounds of ammunition at the Miami International Airport after arriving from Barbados on American Airlines flight 1089.The developments have put the country under scrutiny.