Midway through his speech Wednesday at Camp Pendleton, Calif., President Obama shifted from talking about military policy to highlight the sacrifice of a Marine wounded warrior and his wife, both of whom continue to serve in the Marine Corps. Capts. Matthew and Camille Lampert, were asked to stand after Obama briefly described their last few years. Lampert was a special operator in Afghanistan when an improvised explosive device took both of his legs, Obama said. He survived that 2010 attack, and set out on a grueling recovery so he could get back to his team. “So Matt endured excruciating rehab,…