NEWARK, N.J. (AP) — Federal prosecutors are portraying a defendant in the George Washington Bridge lane-closing scandal as an attack dog for Gov. Chris Christie, rather than someone just following orders.

Port Authority of New York and New Jersey executive Bill Baroni testified Monday that he was hoodwinked by Port Authority colleague David Wildstein. Wildstein has pleaded guilty in the political revenge scheme and Baroni maintained Monday that he believed the closures on the bridge that connects New Jersey and New York were part of a traffic study.

But Assistant U.S. Attorney Lee Cortes on Tuesday asked Baroni about times that he had acted as Christie's attack dog, including cursing out the head of the state firefighters' union.

Cortes also asked about attacks on the late Sen. Frank Lautenberg at a hearing on toll hikes.

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