SANAA, Yemen – U.S. forces launched a raid in central Yemen on Sunday, security and tribal officials said, landing troops off of aircraft and killing three alleged senior Al Qaeda leaders in a battle that was the third such U.S. ground engagement against the extremist group in Yemen. The surprise dawn attack in Bayda province killed Abdul-Raouf al-Dhahab, Sultan al-Dhahab, and Seif al-Nims, they said. The al-Dhahab family is considered an ally of Al Qaeda, which security forces say is concentrated in Bayda province. A third family member, Tarek al-Dhahab, was killed in a previous U.S. drone strike years ago. It was not immediately clear whether the family members were actual members of Al Qaeda.