Steelworker Constructionman Joseph W. Griffith, assigned to Naval Mobile Construction Battalion 11, operates a compaction roller to create a solid foundation on which concrete can be poured. NMCB-11 is a Seabee battalion currently deployed to multiple locations in support of U.S. Africa Command, U.S. European Command, U.S. Central Command, and U.S. Pacific Command areas of responsibility. NMCB-11's Detachment Horn of Africa is a Combined Joint Task Force - Horn of Africa unit whose mission includes stabilizing and strengthening security in East Africa through military-to-military engagements with partner nations. (U.S. Navy photo by Mass Communication Specialist 1st Class Jonathan Carmichael / Released)