The central hub of the United Parcel Service (UPS) processes, on average, 1.6 million packages per day. That's almost twenty per second. Such an intense flow forces operations to be internally consistent, but also demands an enormous amount of flexibility due to unpredictable externalities. What if a road is closed, or a machine breaks? Ghazal Jafari investigates the UPS's contingency management system and looks at this logistical behemoth venturing into new territories.