Marines maintain a tactical water purification system Nov. 18 at Tacloban, Republic of the Philippines. The Marines set up the TWPS to provide potable water for people affected by Typhoon Haiyan during Operation Damayan. The Marines are with the 9th Engineer Support Battalion and Combat Logistics Battalion 4, both units are currently assigned to the 3rd Marine Expeditionary Brigade in support of Joint Task Force 505. (U.S. Marine Corps photo by Cpl. Adam B. Miller/Released)