The prototypes have a unique intelligent navigation system which enables them to plot their own course.

BBC: Mars robots begin test campaign

In sum, the U.S. government had the information scattered throughout the system to potentially uncover this plot and disrupt the attack.

CNN: Transcript: Obama outlines steps to prevent terrorism

In sum, the U.S. government had the information -- scattered throughout the system -- to potentially uncover this plot and disrupt the attack.

WHITEHOUSE: Security Review on Attempted Terrorist Attack

Last week, the country's transport system was shut down in light of this plot.

NPR: Airline Plot Investigation Quietly Moves Forward

Burgundians believe a wine's character is derived principally from the plot of land the vine is planted on, which is graded by a classification system based on the vineyard, village and subdistrict.

WSJ: Will Lyons on Wine: The Joyful Restraint of 2011 Burgundy