This is the first episode since the character "Agent Megan Reeves"s introduction that actress Diane Farr is absent from the team, purportedly serving on special assignment with the Dept. of Justice. In reality the actress temporarily left the show to give birth to her first child, son Beckett, who was born in March 2007.
At 6 minutes Milly asks "Who knew a black box isn't black?" To answer her question, the flight recorder is orange which makes it easier to find in the wreckage.