Red Devils host water purification training event. Published July 27, 2022 By Senior Airman Shannon Braaten 8th Fighter Wing, Public Affairs KUNSAN AIR BASE, Republic of Korea -- Airmen from the 8th Civil Engineer Squadron tested their ability to provide clean water to the Wolf Pack, July 19, 2022. The 8th CES installed a Reverse Osmosis Water Purification Unit as part of a training event. The water filtration process includes three steps to obtain potable water; first a multimedia filter to remove any suspended solids; second, a microfiltration bag filter; and third it uses eight reverse osmosis elements.