it takes an extreme amount of balance, brooavery and a paid-u insurance policy. >> no net, no problem. >> we'll see you at 6:00. >>> tonight, several breaking stories as we come on the air. health care collapse in the senate. republicans delay voting on their own health care bill. what the president just told senators at the white house. >>> plus, president trump threatening to attack syria. accusing them of a new plot to use chemical weapons on civilians. >>> subway meltdown. a train derailing the nation's busiest subway system. hundreds of passengers forced to escape through dangerous tunnels. >>> also breaking tonight, the global cyberattack. first sweeping europe. now hitting the u.s. power plants, banks and hospital computer systems infected. brian ross standing by. >>> and the fiery crash shutting down an american highway. the semi truck slamming into a bridge, exploding into smoke and flames. what we have just learned.