In areas without cellular or Wi-Fi service, the app will store information that is sent by the user and will resend it when cellular or Wi-Fi connectivity returns. The RTD Transit Watch app contains awareness training information. Additional Features: The app has several additional options for transit riders to use. These include: - The RTD-Denver Transit Watch website. - The 8–Signs of Terrorism, anti-terrorism awareness training as developed by the Department of Homeland Security.