WASHINGTON (AP) – Retired Navy admiral and former congressman Joe Sestak is calling off his bid for the Democratic presidential nomination. The 67-year-old Pennsylvania Democrat says in a statement that without the privilege of national press, it is unfair to ask others to continue making sacrifices. In joining the crowded field last June, Sestak called for strong action to deal with climate change, corporate accountability and China’s geopolitical threat. Sestak made little impression with donors or other supporters and failed to qualify for any of the party-sponsored debates. He recently completed a walk across New Hampshire to drum up interest in his campaign. Sestak graduated from the U.S. Naval Academy and spent three decades in the Navy. He served two terms in the House, 2007-2011.