Investigators said they brought Leslie Bennett, 33, to a screening area and they discovered a small bag of pills in his boxers. They said the pills tested positive for Ecstasy and amphetamine.

"I know that Narcan is generally for opiates and Ecstasy would be an amphetamine, so I don't know if it would be of any assistance to the K-9 at all," Goodyear said.

Bennett, of Montana, was arrested on drug charges. He was among about a dozen passengers who were charged while trying to board the cruise.

"The people who put on the cruise put out disclaimers that they will be checked (and) not to bring drugs," Goodyear said. "It falls on the passengers themselves (to not do so)."

Norwegian Cruise Line said it has a zero tolerance policy for prohibited items.