I have saved enough miles (not by frequent flying, alas, but by frequent spending!) over the last few years for 4 airline tickets. I have been saving them for a family vacation next summer. Now I'm afraid that US Airways will fail before I get to use the miles. Do you think it would be safer to go ahead a use the miles to order tickets for a future date? Would I be more likely to get to use tickets than miles if they file chapter 11?