"We are taking an additional set of aviation security
precautions to protect the American people."
Source: Secretary of Homeland Security Janet
Napolitan.
Used by ATC to inform an aircraft that it is identified on the
radar display and radar flight following will be provided until
radar identification is terminated.
Part of the FAA's new website dealing with wildlife strikes is
an extensive photo gallery documenting the kind of damage birds can
do to airplanes, and other wildlife that occasionally visits
airports.