An Alaska Army National Guard CH-47 Chinook helicopter

An Alaska Army National Guard CH-47 Chinook helicopter from 1st Battalion, 207th Aviation, flies to pick up Soldiers and Airmen participating in Exercise ORCA 2019 in Alaska, July 16. 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. 120 National Guardsmen from CST units in Alaska, Mississippi, Montana, Utah, Nevada, Hawaii and Washington are in Alaska to participate in Exercise ORCA 2019. 1-207th AVN aircrews from the Alaska unit transported CST members to several exercise locations in support of event scenarios. (U.S. Army National Guard photo by Pvt. Grace Nechanicky/Released)