Curse of the Infidel (Rogue Warrior) :
Hot on the trail of a bank official who is laundering money for an al Qaeda-sponsored terrorist cell, Rogue Warrior Richard Marcinko finds himself in the thick of a covert operation run by the CIA - a.k.a. the Christians in Action. Angry that their operation has been ruined, the CIA demands that Marcinko and his Red Cell International group work for them. He agrees, then gets into a situation so dire only SEAL Team Six can extricate him.
While grateful for help from the unit he helped establish, Marcinko realizes there's a lot more going on than the CIA will admit - and when the investigation leads to a luxury liner loaded with explosives and contraband heading toward the United States, he recruits members from the original SEAL Team Six to help. But will the old-timers and young bucks be enough to prevent disaster in a US port?