 National Park in Washington is home to a different kind of sporting activity. It's called high-intensity interval training, H-I-I-T, better known as HIT. And it's for members of the U.S. military on the field, in the bullpens, and, of course, the stadium stairs. Officials say the so-called base HIT is the perfect way for service members to train and use the field for a very unique experience. Jason Walker reporting.