People demeanour during a United Airlines calendar in Newark International Airport, New Jersey Jul 8, 2015. United Airlines resumed flights during all U.S. airports on Wednesday after they were grounded due to mechanism issues, according to a Federal Aviation Administration.  The FAA released a sequence to forestall all United Airlines flights from holding off following a systemwide mechanism glitch, that was resolved, a group said. REUTERS/Eduardo Munoz - RTX1JKUJ