ways an unofficial memorial, an unintended reminder of what happened here ten years ago. but built on top of the old charity hospital cemetery is another memorial built specifically to remember. the katrina memorial which houses the remains of the unclaimed, unidentified victims of the storm, more than 80 of them. >> the kids stay with you the most. >> and you saw that . >> yeah. >> dr. lewis cataldi was the medical examiner tasked with identifying all of the dead recovered from the storm. >> they're totally unidentifiable. >> it's like a puzzle. >> very much. >> it was difficult to say the least. many bodies were badly deteriorated from the floodwaters and from the heat. the job was never finished. funding ran out in 2006. just as the failure to reopen charity hospital haunts dr. bennett, the fact that so many of the dead were never identified pains dr. cataldi.