Orca Battlesuit
The Orca Battlesuit is Capitol's foray into powered armor, though it serves more a role of an armored gun platform than the typical "power suit" configuration. The driver is encased in an armored "bubble" cockpit, controlling the walker and its side gun "arms", which may be attached in several different configurations, with a short-range shotgun mounted under the nose to serve as an anti-personnel weapon for close targets. A gunner can ride in a "jumper" seat in the back, manning a gun affixed atop the Orca ... though it's a fairly exposed position, since the gunner is not encased by the Orca's armor, added more as an afterthought than an original design consideration.
Orcas are designed primarily for defensive roles, as they have fairly low mobility for vehicles of their size. They are sometimes adopted for use with combat engineer teams, or for civilian use in hazardous and/or urban environments, substituting more appropriate weaponry or manipulator arms. There are several standard configurations:
Mark I: Hazardous environment. 1-man crew. Heavy lifting arms.
Mark II: Crowd control. 2-man crew. Tear-gas grenade launcher and rubber bullets.
Mark III: General purpose. 2-man crew. Recoilless cannon.
Mark IV: Anti-Personnel. 2-man crew. Heavy flame-thrower.
Mark V: Anti-Tank. 2-man crew. Rocket launcher.
Manta
The Manta is a VTOL craft used by the Capitol military as an aerial troop and supply transport, distinctive for its double fuselage construction. The pilot sits within one cockpit bubble, while the gunner/navigator sits within the other. This vehicle is also used for police purposes, though rarely in urban areas, due to the risk of malfunction over highly populated areas.
Juggernaut
Juggernauts are collosal vehicles that roll across the largest gauge rails of the Trans-Martian Railway - In essence, rolling fortresses that ferry Capitolian troops across the planet and defend Capitolian cities along the railway that spans the planet's circumference. There are no "models" of Juggernauts, per se - Each one is a unique creation, and most have been in use for centuries.