A strike Thursday by a suspected Iranian-made drone killed a U.S. contractor and wounded five American troops and another contractor in northeast Syria, the Pentagon said. American forces retaliated soon after with “precision airstrikes” in Syria, targeting facilities used by groups affiliated with Iran's Revolutionary Guard, the military said. Subscribe to WCVB on YouTube now for more: http://bit.ly/1e8lAMZ Get more Boston news: http://www.wcvb.com Like us: https://www.facebook.com/wcvb5 Follow us: https://twitter.com/WCVB Instagram: https://www.instagram.com/wcvb5/