NTSB Investigates Two Deadly Plane Crashes: UPDATE

The NTSB is investigating two fatal plane crashes that occurred within days of each other. A medevac jet carrying six people, including a pediatric patient, crashed into a Philadelphia neighborhood, causing a fiery explosion. Witnesses described the horrifying scene, with at least one person killed on the ground and several injured. Earlier in the week, an American Airlines plane collided with a U.S. Army Black Hawk helicopter over Washington, D.C., killing all 67 people aboard. Investigators are looking into potential air traffic control staffing issues as a factor in the crashes.