peter doocy has more on that. >> reporter: the national transportation safety board go team has arrived in new york and is on its way to that commuter train derailment in the bronx. authorities say four people were killed and dozens more were injured this morning. governor andrew cuomo held a news conference but would not speculate about the cause. the ntsb's go team will lead the investigation. administration officials say fixes to the obama care website are working. in a status report today, they say there have been more than 400 software foxes aixes and pae loading in under one second but we still experienced big problems this morning. applications weren't going through because the critical verification system was down. vice president joe biden is taking a week-long trip to asia this week. first stop tomorrow is tokyo. the administration is trying to show that the region is still a priority after months of intense foreign policy efforts in the middle east. and the national zoo here in washington has revealed the name of its giant panda cub.