People here don't seem to grasp what essential and non-essential means. They have a particular meaning for the government. Non-essential does not mean that they don't perform necessary work that must be done. Non-essential means that if they happen to be laid off for a week or a month the country is not going to descend into anarchistic chaos.
Take the Forest Service for example, law enforcement is essential and will be kept on staff (less loggers make a run on the forest while no one's enforcing), fire crews are essential since we don't want to just pull them off fires and just let it burn until congress sorts things out.
Civil Engineers and DOT funding are non-essential. So road construction, replacement of bridges, culverts, --- repairing all that flood damage in Colorado. Out the window until the government comes back. If a bridge is out right now, don't expect it to be fixed. If a flood washes a bridge out and it's your only way to get into town? Hope you know how to build a rope bridge.
Take the little Idaho town I'm in right now. A ridiculous portion of the population heats their homes with wood fuel for the winter. Yes, the smart ants went and got their permits in the spring, but there's a good number of people who've waited until the very last minute to stock up. The snow is already flying, and timber sales? Non-essential. They will not be able to get permits in time for the winter. Which means they'll either have to wait and hope the snow stays off until the government comes back or risk getting caught illegally cutting in the forest.
I talked with a lot of locals last night who did not understand this concept at all. People seem to think there's some kind of trove of useless bureaucrats who do nothing that are going to get cut. It's not that, its all government services, any government service you rely on or make use of is going out the window and the bare minimum to maintain social order is going to stay on board -- although, and here's the kicker, without getting paid.