Episode 610, "Old Soldiers" Tue, Jul 29, 1|12c AM
SEASON 1, EPISODE 112 - Don and Agent Quimby of the NTSB investigate eyewitness accounts of a mysterious unidentified object flying dangerously close to downtown Los Angeles that has raised concern of a terrorist attack. After Charlie is recruited to help with the investigation, it is discovered that the flying object is part of a new technology that could revolutionize air travel. But the investigation takes a turn when they learn that the lead engineer is found murdered. Gloria Reuben ("ER") guest stars as Agent Erica Weston from the National Transportation Safety Board.