President Joe Biden traveled to Walter Reed National Military Medical Center for what the White House referred to as his “annual physical,” though no such appointment had been publicly announced in advance, multiple outlets reported Wednesday. Two unnamed sources described as “familiar with the plans but who were not advised to speak about them publicly” told The New York Times that the visit had been on the president’s schedule, even though it had not been announced. “I’m going to Walter Reed to get my physical,” Biden yelled at reporters as he crossed the White House lawn to board Marine One…