(150716) -- PANAMA CITY, July 16, 2015 (Xinhua) -- Members of different security groups take part in a drill for boarding a ship in high seas, as a part of the Panama Canal security exercises "PANAMAX ALFA", in Panama City, capital of Panama, on July 15, 2015. "PANAMAX ALFA" was a multi-institutional event that gathered security forces of the country to put into practice their capabilities to protect the surroundings of the Panama Canal, according to local press. (Xinhua/Mauricio Valenzuela)