4 family members die in car crash while on Disney vacation

01:51

During what was supposed to be a fun family trip to Disney World in Orlando, Florida, a 5-year-old girl and her 11-year-old brother, their mother, and her mother were all killed. Authorities say a pickup truck plowed into their van from behind at high speed. Now a Boston-area community is grieving. NBC’s Sam Brock reports for TODAY.