The city of Topeka sent two flags to its namesake submarine, which is currently being overhauled in Maine.

Topeka Mayor Larry Wolgast says the city recently sent three flags to the crew of the USS Topeka, in response to a request from submarine officials.

The USS Topeka is a nuclear-powered attack submarine. It has been in drydock since December 2012 in Kittery, Maine. The Topeka Capital-Journal reports that the sub is undergoing a 20-month overhaul.

Wolgast said his office recently sent flags, which flew Dec. 11 and 12 in front of City Hall.

Topeka city manager Jim Colson says the flags were sent to show the city’s support and appreciation for submarine’s crew. The flags will be kept aboard the USS Topeka.