Unanswered Questions Surround Virginia Plane Crash and Fighter Jet Response.

Questions are being raised about the handling of an unresponsive Cessna jet that eventually crashed in Virginia, killing all four people on board. Six fighter jets were scrambled to intercept the plane as it encroached on restricted airspace around Washington, D.C. However, the fighter jets weren't launched until long after the plane first went unresponsive, and after it turned around in New York without landing, raising concerns about why NORAD waited to intercept the plane until it was about 20 miles northeast of the nation's capital. The National Transportation Safety Board has begun an investigation into exactly what happened.