text:  CBS News correspondent David Martin got a send-off at the Pentagon celebrating his 40-year career. Secretary of Defense Lloyd Austin. He's always out to break news and not to make noise. And he never pulls a punch. Stocks lost ground on the last day of the trading week. The Dow finished 45 points lower. The S&P 500 dipped 22 points. And the Nasdaq was down 126 points. This is CBS News.