UPDATE: Phoenix airport flights grounded, security checkpoints closed due to suspicious package
Update: 10:20 a.m. EST: Two security checkpoints are closed. Flights grounded, but apparently the airport is clear. https://twitter.com/PHXSkyHarbor/status/928266718052466690 https://twitter.com/crochin1435/status/928275200155770880 https://twitter.com/RMaxwellSAU/status/928261146745831424 ...