Two hospital workers and a pilot were killed when a medical helicopter crashed in Tennessee as the aircraft was headed to pick up an ailing child. Le Bonheur Children's Hospital President and CEO Meri Armour says the Hospital Wing helicopter was cleared for both weather and flight plans when it took off Tuesday morning. Armour said that the pilot and crew were experienced, and that they had a great helicopter. Authorities began searching for the helicopter when it didn't respond during a routine check-in around 6:20 a.m.