Military aerospace fleet week on Wall Street continued with Lockheed Martin (LMT), Raytheon (RTN) and Precision Castparts (PCP) reporting quarterly earnings before the market opened Thursday. A day earlier, Bell helicopter and Cessna jet plane maker Textron (TXT) rose after it beat estimates, but diversified weapons and aircraft maker General Dynamics (GD) fell after it missed forecasts. General Dynamics said its sales and earnings were impacted