Because you have to do that in order to save much. Other wise you are just doing the same flying somewhere else.
One could actually save the same amount by not running a couple of aircraft carriers for a day....if that LOL.
You are cutting in the wrong spot. Washington is the place to cut. Shut the government down for a month with no pay and see how much you save vs production lost. Probably wont even notice the dif. And the places where you see no production loss whatso ever ...fire 25 % of the employees.