(Right to left) Sgt. Jamel Mercado from the Oregon National Guard's 102nd Civil Support Team scans for contaminants on the hands of Petty Officer 3rd Class Brian Kelly, a maritime enforcement specialist with Coast Guard Sector Columbia River's Vessel Boarding Security Team, during a maritime response exercise on the Columbia River May 21, 2014. The multi-agency exercise tested the readiness of the participants' ability to handle various potential threats. (Official Coast Guard photo by Petty Officer 1st Class Zac Crawford)