A dozen American troops were shot today, including two Special Forces members who were killed, when a gunman dressed as an Afghan policeman opened fire on them in one of the worst days for the U.S. military in recent months. The attacked triggered a firefight on the base, officials said. Three Afghans were also killed and a dozen wounded, U.S. authorities said.

Read more http://feeds.abcnews.com/click.phdo?i=962b1de0bea734a497e5bc1c6bee1561