Lawmakers across the U.S. expressed sympathy and grief after a passenger plane collided with a military helicopter near Reagan National Airport in the Washington, D.C. area on Wednesday night. A PSA Airlines Bombardier CRJ700 regional jet operating as an American Airlines flight collided in midair with a Sikorsky H-60 helicopter approaching Reagan National Airport in Arlington, Virginia, around 9 p.m. local time, according to the Federal Aviation Administration...