Government security clearance is not necessary to find vital information about country conditions and potential threats before traveling overseas, according to experts. "You don't need a clearance," said Centennial Airport Executive Director Robert Olislagers, who is also a subject matter expert for the Aviation Security Advisory Committee. "But security generally isn't cheap, and good information is sometimes hard to come by. The biggest problem is that there is good information spread across 20 or more Internet sites. They're good resources, but our goal is to provide a central resource."