I remember being disgusted at the time of the Bali bombing when the injured were made to fly in Hercs for ten plus hours to Perth hospitals 3-4 hours to Darwin and the GG Holingworth was using a chalenger in Galipoli and the PM set off to Mexico a few days after to some comference. as far as I know neither offered their aircraft to help the injured get a faster trip to a burns unit.
you cant set up a Challenger in an Aeromed config with all the attending medical staff and equipment.