The US Postal Service is an unsung bastion of our democracy. In all sorts of weather, day after day, to people of every background and description — even during pandemics — it delivers! But lately this most essential institution has come under attack. In Rochester, New Hampshire in October, a brave quartet of local postal workers was set upon by a subversive foe: a vicious, stubborn, curiously resourceful, and possibly rabid fox. The assailant did not attack just once but four times, a siege whose details remain necessarily vague, in part due to medical privacy concerns and in part because such details might reveal vulnerabilities in a system crucial to our well-being as a nation. The first stage of the onslaught occurred outdoors and came, it seems fair to conclude, as a surprise. The threat posed by unruly domestic dogs is well known to postal employees (a modern unionized workforce firmly dedicated to health and safety in all its operations), but diminutive wild canids of noted …