. >> announcer: terry sanders is the kind of man any parent would be proud to call their son. >> [ laughs ] >> announcer: after a prestigious career in law enforcement, terry decided to move back home to be close to his parents and help in any way he could as they entered retirement. he never imagined that he would be the one needing help. >> i am an only child and, you know, when i moved out here, i wanted to be there for them -- my dad and my mother. >> he's been a joy. he's been an absolute joy all his life. he's been a blessing to us in every way. >> he grew up to be just a good man. >> announcer: the sanders were enjoying having their son back in town. but then, in november of 2012, terry began to suffer from extreme fatigue. >> i started noticing my heart was pounding and i would walk 100 feet and have to stop and literally put my hands on my knees and, you know, sit there and breathe. and i realized something had gone wrong. so i was in trouble somewhere. >> he had told me, "mom, i feel like i'm having a hard time breathing." i said, "this is not right. you need to go to the doctor