Stop showing your ignorance and educate yourself.
If need be, YRCW will cut off its arm (Regionals) to save the body (YRC), not the other way around. Another way to put it is to "sacrifice your pawns, to save the king".
In the freight business, and the economy, there are constant peeks and valleys, that last for several years.
When times are good and corporations have cash to spend, they purchase assets of other companies, which is what Yellow Corp.(YRCW) did years ago. Once upon a time, Roadway Corp. did the same thing with Coles Express, Spartan, Viking, Central Freight, and started up Roadway Package System (RPS), now known as Fed-Ex Ground.
As it becomes necessary, they sell off assets to save the major company. These are the toughest economic times that many of us have ever seen, therefore extreme measures are called for.
Go to Yahoo Finance, look-up previously filed 8K's for YRCW, in which it states, the terms of the loans that were restuctured. It explains in those statements that all of USF was put up as collateral.
If needed, whether your profitable Regional Carrier or not, your assets will be used help YRC (Yellow-Roadway) survive.