USS Tucson (SSN 770) returned to Naval Station Pearl Harbor Monday, Dec. 15, following a 23-month absence that included a modernization period in Norfolk, numerous sea trials and a port visit in San Diego. "Everybody is happy to be back in Pearl Harbor," said Cmdr. Paul Spear, USS Tucson commanding officer. The submarine just completed a major overhaul in Norfolk. "Tucson has a new fire control system and a totally refurbished engine room as well as a lot of new gear on board," said Ensign John Chester Jr., Tucson junior officer.