MyKill

The story he told on the daily show, was that the door had just broken Harrison Fords ankle and in trying to lift the door off him he fractured a vertebrae.
They were talking about the fact that Harrison Ford is... "Unbreakable!"

I'm an australian cadet with 15/16C feet, and big calves and here's what I've found so far for Jack boots substitutes:
Funtasma/pleaser Captain Boots in XL are like a 14 to 14.5, the calf is pretty wide (I can get my hand down them to straighten my pants. But the foot is fairly narrow (definitely not EEE). Also, they're fairly high (I'm 6'8" so its in my favour). They have a zip up the inseam. But they are definitely not a 15, ouch! I'm going to try to stretch the toes lengthways(width stretching would be easier), you can get them Online (costume/fetish sites) or even a local costume store - that's where I got mine),
I'm also investigating Russian "Kirza/Kersey" boots ATM, don't know if the calf can be stretched ("...Kirza is a pig leather imitation based on the multi-layer cotton fabric, modified by film-forming substances. The name kirza is an acronym from KIRovsky Zavod (Kirov Plant), the first place of kirza mass production..."). I'd steer clear of soviet-power, www.sovietboot.com seems okay though.
Otherwise, check out a local biker Boot store. "Engineer" boots are based off Jack boots (the top buckle is reversed, the vamp is insideout and you'd have to remove the instep strap, the toe can be a little too square as well, and watch out for molded logo's. (The dream would be custom wesco's from bigblackboots But $$$). I haven't been able to get the time to look in person here in QLD yet.
Hope that gives you a good place to start (took me 2 months and 4gb on my phone to get this far with them, and that was with suggestions from at least 3 forums as well!).
I'll let you know if I find anything else, let me know if you find something I havent, cool? Isn't having big feet "fun"?
The journey continues,
SPOOOOOOOOOON!!!

Yes, some members were telling me about that this weekend at a troop.
I know long lead times are frustrating (the inner 5 year old wants it NOW!), I just thought I'd add my perspective.
(I complain about boots on at least 3 detachment forums, so I do understand the frustration. But its such a first world problem, you have to find the humour, [soft falsetto] otherwise I'd lose my tiny little mind).

I'm going to preorder battlefront and get a controller for my HP beats AIO, plus I can play the OG copy of battlefront II I bought at a pawn store (I bought it to buy it, $3, didn't even have a PC at the time). Have to hunt down a PC Halo, I miss that 3 rocket warthog.
I see pinkeye in my future (video games can slow your blink reflex and your eyes dry out). Once played a solid hour of redfaction deathmatch against bots, turns out I was averaging 1 kill every 1.5 seconds, for an hour!!! I don't honestly know if I blinked at all.
I looked like an angry Terminator.

I'm going to preorder battlefront and get a controller for my HP beats AIO, plus I can play the OG copy of battlefront II I bought at a pawn store (I bought it to buy it, $3, didn't even have a PC at the time). Have to hunt down a PC Halo, I miss that 3 rocket warthog.
I see pinkeye in my future (video games can slow your blink reflex and your eyes dry out). Once played a solid hour of redfaction deathmatch against bots, turns out I was averaging 1 kill every 1.5 seconds, for an hour!!! I don't honestly know if I blinked at all.
I looked like an angry Terminator.

I've mostly just ground away at the force unleashed 1 & 2 for all those achievements (especially the 500 kills), just not lately (halo odst trying to find the last couple of audio logs)
Have to either fix my OG Xbox (something is sticking in the optical assembly, as it gets to track 7 on a CD and has a stroke, as well as the sticky drawer (you gotta hit it just right), that they all get eventually) or get a 'new' one at a pawn shop to play my old battlefront games
Sorry, went off topic there!

Me? Sorry don't mean to hijack, but I'll take any help I can get. I'm in getting started as Australian, 4XL warrant officer. I'm looking for both/either.
Not me? Whoops, disregard, I'll be over in the corner.

I know, right. Instead of Biggs darklighter joining the empire and realising he's a rebel, I'm going the opposite direction (I think it started when I realized what a Death Star could do to a Vong Worldship!!!).
Filthy rebel scum, they're why we can't have nice things!

I know, you always end up playing the same level over and over, looking for that thing you didn't kill last time for that little noise achievements make.
"Bleep bloop, you said bleep bloop"

Sadly all that we can do, is keeping their legacy alive!

Mwaaah hah hah hah haaaaaah, excellent!

I'm currently waiting to hear back from Francois about plus sized boots (for my size 15 yeti feet).