https://www.washingtonpost.com/local/public-safety/power-outage-reported-at-reagan-national-airport/2018/08/15/f250b4d4-a0f8-11e8-93e3-24d1703d2a7a_story.html?utm_term=.9750ebc3b137

Reagan National Airport loses power, and then gets it back about an hour later