Home > Video > Nightline > Nightline: 7/5/13 Nightline 07/05: Inside Mayo Clinic Organ Transplant Unit: Gift of Life Inside Mayo Clinic Organ Transplant Unit, George Zimmerman trial Part 1: Colter Meinert, 9, was born with half a heart, but a donor heart may transform his life. Inside Mayo Clinic Organ Transplant Unit: Living for 2 Part 2: For Jessica Danielson, 30, not a day goes by without thinking of her "angel" organ donor.