dark blue for the Navy, ultramarine blue for the Air Force and scarlet for the Marine Corps. They represent each branch of service to which materiel and non-materiel capabilities and support are provided. As the mission changed and the capabilities of JIDO were codified, symbolism for this seal was carried from the Joint Improvised Explosive Device Defeat Organization to the Joint Improvised-Threat Defeat Agency to the current organization. References Further reading Improvised explosive devices United States Department of Defense