Striking Deutsche Lufthansa AG cabin crew members hold placards during industrial action outside Frankfurt Airport, operated by Fraport AG, in Frankfurt, Germany, on Friday, Nov. 13, 2015. Deutsche Lufthansa AG stood firm on plans to lower costs and overhaul the airline as flight attendants threatened to team up with pilots and ground workers next time around in a labor dispute that has already brought the airline's longest ever strike. Photographer: Martin Leissl/Bloomberg via Getty Images
