On his conversations with airlines on boorish passengers, which is a global phenomenon, Civil Aviation minister Jyotiraditya Scindia said that is a "wild card" in a way. "No one knows how you or I are going to behave when we board a flight. But it is important to set examples and precedents and we have been extremely strong on coming down on any unruly passenger on any of our airlines. This may be through following the legal process or putting the person on a no-fly list for an extended period," he said.