Russell Korobkin at The Volokh Conspiracy has an interesting post as to who should get paid first should the government run out of cash. There is only one problem with it. The first rule of business is always to pay the guys with the guns first. Most of our servicemen are based in the United States and are not wealthy enough to just have their income turned off. They have bills to pay and families to support as well. You pay them first because if you don't, those guys might decide to go and get their paychecks. Even if they didn't, Korobkin's wrong about soldiers not being able to walk off the job. It's called going AWOL. History teaches us that nation's rarely get away with gambling the loyalty of their soldiers.
Other than that, it's an interesting article. We'll be finding out very soon how this will actually go down. Less than 72 hours to go!