As a public, non-profit entity, the Canadian Red Cross certainly puts materials and communications out to the public. If you are involved in a position that will be responsible for any formal written communications, your interviewer will want to get an idea of the experience you would bring in this realm. Think back to the written communications experience you have and come prepared to discuss them. Keep in mind that this can include simple email communications or more formal documents, articles, or publications that go out to a much broader audience. Some things to touch on are your grammar skills, your typing skills, and your thoroughness in ensuring that your work is error-free.