Hi there!
Well Australia is just about to aquire up to 4 C-17A's to supliment is fleet of C-130H & J's and Caribous.
The Herc J's are a great piece of kit but just can't cut it with the C-17 when it comes to distance and carco lift.
C-130J:- Max cargo 16 tonnes, speed 640kph @ 22,000'
C-17:- Max cargo 74.797 tonnes, speed 810kph @ 45,000'
To put this in real terms a C-130J flying from Aust to Baghdad with 12 tonne of cargo would have to refuel twice on route where as the C-17 carrying 15 tonnes could do it non stop.
Also try and put a M1A1 Abram into a C-130

and yes Austraia is getting 54 of them... first deliveries should be befor the end of this year.
And just a foot note:-
Aust was the 1st country out side the USA to purchase the C-130A's and I could be wrong but we may also have been the 1st to get the "J" model as well.
Plus looks like we are getting some more CH-47 Chinooks. We currently have 4.
Phil...
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collection includes:-
Chev "BLITZ's" (CMP's)
Inc:- No.8 FGT, C8A HUW, C15, No.9 GCT (sold)
Milt Land Rovers

Inc:- 58 "gun buggy", 60 FFW, 70 FFW, 71 10 seater Wgn, 69 GS.
M3 Stuart Light Tank "hybrid"

FV1600 Humber FFW/cargo
Mk1 Ferret scout car (waiting restoration)
Various trailers
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Milt Radios
etc etc...