Originally Posted by Global_Hi_Flyer

It depends.

Virtually ALL Federal contracts provide for cancellation at the "convenience of the Government". So, regardless of term, they can be canceled upon whatever notice is required in the contract clauses.

I should add that contract screeners that are contracted by the airport/local authorities (rather than by TSA) will not be affected by the sequestration unless the local government obtains the funding from the Feds.