Given by whom? Were they kept in the cave without access to TV and newspapers for the last month? Did not they know it is a possibility? Did not they know it is a possibility now for years since we have a split Congress which can not pass a proper budget for years? Why they had to prepare for this entirely foreseeable circumstance in half a day - US govt can not afford one risk management specialist that could evaluate such circumstances and prepare a plan?
They have 4 hours, using emergency funds appropriated for exactly this situation, to prepare the agency to be shuddered for an unknown amount of time. They have to make backups, close out current time sensitive issues, fill out paperwork about what went wrong with the plan so people can recover if someone else has to do it.