The plot that ultimately involved a Delta Air Lines flight bound for Detroit on Christmas Day in 2009 failed.

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The exposure of the alleged plot led to tough restrictions being imposed on air passengers across the globe.

BBC: Profile: Rashid Rauf

Prosecutors in New Jersey recently used the Patriot Act to convict Yehuda Abraham, whose services were used in a plot to sell shoulder-fired surface-to-air missiles to terrorists with the understanding that they were going to be used to shoot down U.S. commercial aircraft.

CENTERFORSECURITYPOLICY: Happy birthday, Patriot Act!

We don't want to presume that we know the bounds of this plot, so we are looking at all types of packages, air travel, whatever.

WHITEHOUSE: Full Briefing on Security Alert

Though the plot is twisty and the direction elegant, the entire project exudes an air of willful nostalgia for the way things were just four years earlier.

NEWYORKER: Le Doulos