KGO ABC World News Tonight With David Muir July 15, 2018 00:57:00
And no, it's not a good-bye. it's thepposite. because this little girl, adriana aviles, not long ago faced a most severe challenge. leukemia. chemo was not working for her. only a bone marrow transplant could save her. but there were no donors out there who were a match. >> she knew how dire her situation was and how scary it was. she understood. >> reporter: enter to this story a guy who lived 2,000 miles away. michael laureano, just back from serving in iraq, had started college in delaware and spur of the moment he signs up as a potential bone marrow donor. never really expecting to get the...