Kids or people in general, are identified by articles of clothing etc by family members. I've never heard of DNA being used unless it was a corpse so rotted it was unable to be recognized as male or female etc. Secondly, how can some 18 year old afford the truck used in the chase, the guns used with scope and body armor and have enough training to top it off, to evade military trained border patrol officers? It is inconceivable in my opinion.