NEW DELHI: The Bureau of Civil Aviation Security has issued the highest-level alert for airports following the terrorist attack in Uri Airports have been asked to maintain same level of security checks and preparedness as they do before Independence and Republic Days. “Random checks have been increased and more profiling is being done. Flyers can expect longer queues,“ said an official.The focus this time is on the entrance area of airports as the attacks in Europe showed that vulnerable terminals have been targeted with ease. The CISF has spruced up its presence on roads leading to major airports. Aviation minister Ashok Gajapathi Raju has asked states to take BCAS warning seriously .