operator a blow-by-blow account as he wandered behind rafi meitiv , 10 , and his sister dvora , 6 , in silver spring on sunday .
the 7-minute call would reignite a controversy focused on those kids and their scientist parents , danielle and alexander meitiv , who espouse the hands-off parenting style .
the caller , who was out walking his dog in the suburb adjacent to washington , dc , said he saw ` two kids that are unaccompanied , and they 've been walking through this vicinity of the washington , dc-adjacent suburb of silver spring .