It's going to be hard for Delta to survive alone unless it can drive its costs down to the level of the low-cost carriers.

Given his extensive background in network planning and strategy formulation, he probably would be a good choice for a carrier like Virgin looking to launch U.S. operations.

Obviously, there's a requirement that United will have to sustain strong operating performance for an extended period to service those obligations.

It'll be a case of city by city, if that does in fact play out, if US Airways goes down,

Until September 11, they really were focusing on keeping their balance sheet rather clean and keeping their leverage modest relative to the other big carriers. Unfortunately, that all changed after 2001.

Those two could make sense, ... The problem is, who has the balance sheet and the financing to pull that off.