Breach of what contract? That was an existing Boeing plant, not something new that Wichita gave them. Much of the heritage Boeing work in the area was taken over by Spirit Aerosystems, which is still hard at work in Wichita making large structural components for BCA:
http://spiritaero.mediaroom.com/index.php?s=43&item=178If you read the news, Boeing underbid the contract, possibly by as much as $2 Billion (thus saving the taxpayers a lot of money on a fixed price contract). So by your rules, Boeing should just accept the loss rather than try to cut costs to eke out a profit?
It isn't viable for the company to keep the Wichita military plant open when they have excess capacity elsewhere. BTW, most of the tanker work will be performed in Washington State where there is a strong union presence. I suspect the unions there are pretty happy about that turn of events.
Most of the tanker jobs in Kansas are at suppliers anyhow, not at the Boeing plant, and the plant won't be closing until late 2013- nearly 2 years from now.
If one were to be concerned about the welfare of people in the US, better to retain the work in the US rather than have it relocate to Tolouse.