Ava Thomas was hospitalized for half a year while she awaited a lung transplant. Her family got good news, but realizes it came at a high cost for another family. Doctors, nurses, and other members of the medical team clapped and waved at 4-year-old Ava Thomas last Monday as she was rolled down the hospital hallway. "She's waited a long time and at that moment she knew she was getting her new lungs," John Thomas, Ava's dad said.