David stood at the end of the pier staring at the large cruiser he and his NCIS counterpart, Jethro, would be boarding and going underway with. There had been a series of murders starting with civilian spouses, FBI, and now continuing with those very same spouse's sailors, NCIS. One of the newest victims was stationed to the USS Vella Gulf as well making a pattern.

Dave hiked his bag up higher on his shoulder as they started walking to the pier.

"You ready?" Gibbs asked him as they showed the ECP guys their badges.

"I'm ready," he replied, his own serious expression not changing.

Both men walked along the ship in silence. They had known of each other for years, people joking about Rossi's NCIS counterpart. Both were Marines, both divorced three times, lost their first child and wife, both are now law enforcement officials, and were sort of "dads" of their teams.

"What do you have so far?" Gibbs' guff voice asked reluctantly.

"Unsub is a white male, early 40s, reduced in rank or prevented from advancing more than likely due to an affair gone wrong. Living middle class with a recent traumatic event," David relayed the BAU's profile. "You?"

"So far we've determined about the same," Jethro told him as they boarded the ship showing their IDs again.

"Agents," The OOD greeted. " The captain should be down soon."

"Thank you," David said as he waited for the CO to arrive.

"Gentlemen," The man they were discussing greeted as he walked out onto the quarterdeck.

"Attention on deck!" the OOD yelled.

"Carry on!" The CO corrected and everyone went back to their duties.

"Sir," Gibbs greeted him and both agents shook hands with the captain.

"How can I help you?" The CEO asked as he started leading them around the ship.

"Petty Officer Third Class Jones," Rossi started, " he was stationed to your ship as well as the other two dead sailors. Yes?"

"He was Mr…?"

"Agent Rossi."

"Yes he was an FC on board Agent Rossi," The CO confirmed as they headed for O-Country (officer quarters).

"What can you tell us about FC three Jones?" David asked as they stopped in front of a stateroom. "And your two other sailors?"

"This is where you both will be staying," The CO said as he opened the door to reveal the room. One large bunk bed , two desks and two lockers. "FC3 was a good sailor, had some infidelity issues but the entire strike team is great with that same issue."

"They all had issues with infidelity?" Agent Rossi asked as he said his things down on the bottom rack. There was no way he could get up top if you wanted it, Gibbs smirked and tossed his bag on the top rack.

"They cheated on their wives and their wives found out," the CO explained.

Rossi looked at Gibbs a moment, " first he targeted the wives reported reported their husbands, what changed for him to target and punish the husbands instead?"

"I'll leave you agents to get settled in and ENS Bartha will be by in a few to escort you around the ship if you need anything… just ask. We are down three guys because of this prick," the CO told them before heading out.

While Gibbs opened his rack and unpacked David took his laptop out and sat at a desk to start working everything out.