If you're going to be using USB drives anyway, then using them to move files into the country would be faster.
But either way both truecrypt and veracrypt were independently audited and no major flaws were found. Not sure when the last veracrypt audit was done.
If you're not and they're still allowing your planes to fly through their airspace then this is a great way to ensure that they lock your (and your friends') planes out.
What could go wrong.