 The timing of the outage was particularly inconvenient in Europe, where the busy summer holiday travel season is just getting underway. Dutch carrier KLM urged passengers not to go to the airport if their flight is not departing or is seriously delayed. Joel Rose, NPR News. U.S. stocks are trading lower this hour. The Dow Jones Industrial Average is down more than 1% or 419 points at 40,245. You're listening to NPR News.