A U.S. Army Black Hawk helicopter flying through restricted Washington, D.C. airspace on Thursday triggered urgent evasive maneuvers by two commercial jets inbound to Reagan National Airport. An American Airlines jet collided with a military Black Hawk helicopter near Reagan National Airport on Jan. 29, killing all 67 people aboard both aircraft. Just four months after the deadly incident, it was reported that an Army chopper deviated from its approved flight path, veering around the Pentagon instead of heading directly to the helipad, according to a Friday email from Federal Aviation Administration (FAA) Assistant Administrator Chris Senn ... The unexpected...