Would-be jihadi fighters are booking tickets on cruise ships to join extremists in Syria and Iraq. The move is an attempt to bypass stepped-up efforts to thwart them in neighboring Turkey, Interpol officials said. For that and other reasons, Interpol is preparing to expand a pilot program known as I-Checkit, under which airlines bounce passenger information off Interpol's databases, in hopes that one day the system can expand to include cruise operators, banks, hotels and other private-sector partners. Interpol's outgoing chief Ronald Noble called on countries to step up screening at transportation hubs.