U.S. Marine Cpl. Sean Grady, a dog handler and pointman with Echo Company, 1st Light Armored Reconnaissance Battalion, and Ace, an improvised explosive device detection dog, post security during a dismounted patrol here, April 27, 2012. Grady, a 27-year-old native of Otho, Iowa, and Ace have successfully located 16 IEDs, the most of any team in their battalion, since arriving in southern Helmand on October 2011.