After analyzing field reports that showed grievous losses, the GDI Board of Directors met to address the issue of the lack of long-range mobile artillery support. The Juggernaut Mk. I combined GDI naval and walker technology by fitting three large-caliber naval guns to a modified Titan Mk. I chassis. After the Firestorm Crisis, the Steel Talons division designed the second iteration of the Juggernaut, called the Behemoth. By the Third Tiberium War, this iteration was adapted to the Juggernaut Mk. III, used by regular GDI regiments.