I am not a North American , but I have numerous friends in Fedex.
Personally, I consider an Airline move now to be quite late in the game. UPS and FEDEX etc are the only NAM operators with viable wide-body employment going through the next few years of QE etc. Hopefully the guys moving this late, will survive.
Obama is talking things up. But he only needs to keep the votes through November 2012. After that, some sensible economic policies will surely start to bring things down to reality. Ultimately, we are looking at systemic downturn here in Asia soon. Then it is last in-first out... or locals in-expat out.