NYC utility probes electric flash that lit sky in eerie blue

New York • Electric utility Con Edison was working Friday to figure out what caused a high-voltage equipment failure that unleashed an otherworldly flash of bright blue light in the night sky over New York City.The event Thursday caused power outages, briefly grounded flights at LaGuardia airport and filled social media feeds with eerie photos, questions and jokes, to the point that even the New York Police Department tweeted there was "no evidence of extraterrestrial activity."While Con Ed