Radios bark out news of multiple disasters - fires, riots, accidents.
Elevators, bulldozers, and all kinds of heavy equipment have a variety of electronic timers keeping track of, among other things, maintenance schedules or the time and day. If the timers confuse 2000 with 1900, the machines will revert to default mode, and what happens next depends on how they were programmed. Thousands of cities and counties are in the same boat as Lubbock. There isn't enough time and money to take care of all the critical things. Lubbock doesn't have that kind of money or expertise.