Travel bans. Shootings. Viral passenger videos. No one will forget the past year in travel. How could they? But what does it all mean for your 2018 trips? “These are interesting times,” says Patricia Schultz, author of “1,000 Places to See Before You Die.” The year’s watershed moments included a series of controversial travel bans, a mass shooting in one of America’s top tourist destinations and the expulsion of an airline passenger captured on video. At the same time, several largely unnoticed events, mostly happening behind the scenes, promise to exert an equally powerful influence on your travel plans next year. Bottom line: Travelers will need to be more vigilant in 2018 than ever.