Man sentenced to 21 months in federal prison after breaking into Kings Bay submarine base in Georgia Mark Peter Colville was among seven people who broke into Naval Submarine Base Kings Bay in St. Marys Georgia and vandalized parts of it. Author: First Coast News Staff Published: 8:43 PM EDT April 9, 2021 Updated: 8:43 PM EDT April 9, 2021 ST. MARYS, Ga. — The final defendant of seven has been sentenced after authorities said he played a role in breaking into Naval Submarine Base Kings Bay and vandalizing government property back in April 2018 Mark Peter Colville, 59, of New Haven, Conn., was sentenced by a U.S. District Court to 21 months in federal prison. Colville was also ordered to pay $33,503.51 in restitution, according to David H. Estes, Acting U.S. Attorney for the Southern District of Georgia.