One way to save money is to close at regular time on tax day (Apr 15). This would save a day's wages for the Post Office. Those overtime hours gain no revenue (no stamps sold, no packages mailed, etc.).
Do they plan to construct a monument for each deer, bird, squirrel, etc. that is killed during hunting season? How about a monument for each fish caught?
Drunken driving as reported in the story is not DUI, it is DWI.