"Most passengers are completely unaware" of the security risks that come with doing this, an expert told Newsweek.

What time do cruises board, and is there a best time to board a cruise ship? Read on to find out the answers, as well as when you should plan to arrive in your departure city before you set sail.

So, it's a good idea to add the TSA PreCheck number to your profile on any airline you frequent, so the KTN is automatically ...