isaacs saw marty tankersley, the man we met in the parking lot who'd driven 200 miles. out that tankersley, a few years back, had two heart attacks and heart surgery but almost no follow-up since. >> so you haven't seen somebody in a while with regards to your ticker and stuff? >> the tankersleys live in dalton, georgia. they fall in the category of the underinsured. marty's a truck driver. he has major medical insurance through his employer, but the deductible is $500, really unaffordable, and the dental insurance costs too much. no one really knows just how many americans are underinsured like the tankersleys. >> he's the lucky one that could drive the 200 miles. he's the lucky one that got to see people today and get hooked in. there are tens of hundreds of thousands of people like him. >> marty, his wife, and daughter were seen for checkups, glasses, mammograms, and the yanking of that agonizing tooth. >> this has truly been a godsend to us, to me and my family and to all the hundreds of people that's here. i see the faces-- the relief in the faces. this has been a w