U.S. Navy Seaman Zac Walker, steelworker with the Naval Mobile Construction Battalion 5 from Port Hueneme, Calif., uses a circular saw, Sept. 9. Walker is originally from Houston, Texas. NMCB 5, with help from 1st Battalion 161st Field Artillery, Kansas Army National Guard, and 243rd Engineer Support Platoon, Maryland National Guard, erected numerous tents on Camp Lemonnier. The Combined Joint Task Force - Horn of Africa, under the command of U.S Africa Command, conducts civil and non-combatant military operations in East Africa aimed to strengthen defense capability and protect U.S. and coalition interests, promote regional stability and dissuade conflict.