They’re the kind of stowaway nobody wants to confront under any circumstances. But these unticketed passengers allegedly made it aboard an Air Tran Airways flight from Charlotte, N.C., to Houston. The culprits? Cockroaches. According to a story posted on Charlotte’s WCNC.com, Harry Marsh and his fiancée, Kaitlin Rush, said they saw the bugs crawling out of the plane’s air vents and carry-on compartments. But in a lawsuit they filed after the alleged Sept. 15 incident, the couple claimed flight attendants were either too busy to check out the situation or simply didn’t believe it existed.