KITTERY – New Hampshire U.S. Rep. Carol Shea-Porter is joining leaders and union members at the Portsmouth Naval Shipyard to discuss critical issues regarding hiring and investments to expand its capacity.

Shea-Porter, a Democrat, also is holding a question-and-answer session with union members Wednesday outside the shipyard gates.

The shipyard, in Kittery overhauls and repairs nuclear-powered submarines for the U.S. Navy.