full-blown heart attack. in fact, he's checking into this hospital in lincoln, nebraska for open heart surgery. it's an important lesson. what you see on the outside doesn't always match the inside. >> obviously closed down quite a bit. >> the surgeon shows us the striking images on the angiogram of bare's heart. >> you can see this tight narrowing right there where that closes down so that limits the amount of blood that can get out. then you've got a real tight narrowing right up here where that vessel on the side takes off, then another narrowing here, then you've got a pretty tight narrowing there. >> all the major blood vessels supplying blood to the heart -- blocked. yes, that is the very picture of a heart attack waiting to happen. >> he's at risk for heart attack just because of the amount of plaque that he has in there. >> like me, bare has a family history of heart disease. that's why four years ago he underwent the coronary calcium scan that we just learned about. his results were not good. >> the score was 111. >> zero is the best. over 100 means an increased risk of heart attack. even sudden death. >> and you may breathe. go ahead, rest your arms down if you'd like. it is going to take me a couple of minutes to check these images, make sure we have everything we need. >> bare went through the test again this year and the score was up to 243. the average score for someone his age -- 5. >> i was doing some exercise about three weeks ago, jogging