See that big red button on the wall under the sign "Do Not Push This
Button!"....
DC 911 outage caused by contractor error
http://wtop.com/dc/2016/08/dc-911-outage-caused-by-contractor-who-pulled-wrong-switch/
WASHINGTON — D.C. is now operating two separate 911 centers after a power
outage caused by human error left the nation’s capital without any
emergency phone service for almost an hour on a busy weekend night.
A contractor working Saturday night inadvertently pulled an emergency
power shut off switch that cut electricity to the 911 phone system and a
call routing system at the District’s Unified Communications Center, said
the center’s Director Karima Holmes.
“Unfortunately because it was human error we weren’t prepared for it,”
Holmes said.
[...]