he likely would have seen his pics on the net and changed his looks dramatically. and where he went so as not to be recognized.
he may had already been in disguise if he was a hit man and after mike for some reason we will never know.
no telling where he is or where he went. can only speculate.
if they want to get real leads that are new then they need to plaster his pics on you tube, and x, and face book.
and spend the money on the dna.
still since he had stolen credit card and murdered a person he likely had a record and could be traced that way. not likely he never had a prison stay someplace at his age.
no one mentioned his accent at all . that may tell what part of the country he lived in and maybe wasnt even an american and left here.
old enough he could be dead or died in jail and would be unrecognizable now anyway.