At age twenty, Marine Scout-Sniper Jack Valentine had his first kill in Iraq at the start of the Persian Gulf War. Now, it's 2006, and he's back in Baghdad, obsessed with taking down al-Qaeda terrorist Abu Musab al-Zarqawi. Jack missed his first shot at Zarqawi, and it's haunted him ever since-even though the attack struck fear into the black hearts of the jihadists and earned him the name the Ghost of Al-Anbar. Now leading his own special forces...