Close-up of sign with logo for Lockheed Martin Space Systems in the Silicon Valley town of ... [+] Sunnyvale, California, October 28, 2018. (Photo by Smith Collection/Gado/Getty Images)Getty ImagesWe believe that Northrop Grumman stock is currently a better pick than its industry peer – Lockheed Martin stock (NYSE: LMT), given its better valuation and robust prospects. NOC stock trades at a slightly higher multiple of 1.9x trailing revenues, versus 1.7x for LMT. Although Northrop Grumman has seen a slightl ...