Sgt. 1st Class Brian Miller, 102nd Civil Support Team, Oregon National Guard, senior supply noncommissioned officer, supervises the decontamination process after a team member responded to a simulated incident at the Alaska Railroad train yard in Seward, Alaska, May 18, in support of Exercise ORCA 21. ORCA is a chemical, biological, radioactive, nuclear threats response exercise designed for participants to provide support in the aftermath of hazardous materials incidents. ORCA tests interoperability between agencies, increases opportunities for working relationships, and practices requests for assistance methods. Approximately 250 National Guardsmen from CST units in Alaska, California, Connecticut, Colorado, Idaho, Ohio, Oregon, Rhode Island, South Carolina, South Dakota, Washington, and Wisconsin are in Alaska to participate in Exercise ORCA 2021. Numerous support units and civilian agencies participated in the exercise as well. (U.S. Army National Guard photo by Dana Rosso)