Petty Officer 1st Class Ryan Cross, left, a K-9 handler from Maritime Safety and Security Team Seattle, climbs the rail as his partner, Thomas, keeps an eye on the crew members of the motor vessel Ironwood 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)