from the black boxes today. jordan says this is just the beginning. it launched new air strike against isis after the militants burned to death one of its pilots. the sites were in syria and iraq and included training centers and weapons storages. isis controls about a third of each country. jordan says it will go after the militants wherever they are. meanwhile, more u.s. citizens have been arrested for trying to leave the country and join isis fighters in syria. abc's martha raddatz has the details from washington. >> reporter: the four men made a 1,000 miles from new jersey to kennedy airport by bus. they are 20 and under who the fbi says may have been trying to join terrorists in syria. three were stopped before boarding the plane, but 19-year-old hamza ahmed managed to board an international flight. federal agents took him in to custody just before takeoff. he's been charged with making false statements in a terrorism investigation. investigators say he told them