Seaman Benjamin Kistner, constructionman, assigned to Naval Mobile Construction Battalion 3, uses a string line to square a foundation during a construction project at Hamramba Primary School in Moroni, Comoros. Seabees from NMCB-3 are deployed to Combined Joint Task Force-Horn of Africa from their homeport in Port Hueneme, Calif., and have been working on the school in cooperation with the government of Comoros.