Yesterday afternoon we experienced a failure in our WAN circuit. According to ODC PDDL
the fiber line was cut by a bullet. So far that's the most unusual reason for a link failure - usually its a matter of the line being cut by a construction (destruction?) crew or someone tripped over the power cord.
What unusual reasons have you had network or server outages?
[BTW ... I'm kidding about the Title. Please don't make this a political conversation about gun control.]