OK, the Australian Defence Force is now equipped with the M1A1 Abrams (mainly based in Darwin with 1st Armd Regt, with some for training purposes down at the School of Armour at Puckapunyal, Vic- I saw a couple down at the Avalon airshow)- but WI the Defence Dept had instead decided to go for alternative MBTs like the Challenger 2 or Leopard 2 ?