Heavy vehicles (Tanks and Bradly’s) are heavily armored.  They are usually very slow, but can do a lot of damage to just about anything, including infantry.  Each heavy vehicle has two seats in total.  The primary seat lets the user control movement of the vehicle, and it’s primary weapon.  The second seat  controls the alternate fire, ranging from mounted machine guns, to rocket launchers.  Each heavy vehicle can be equipped with various upgrades ranging from, maneuverability, enemy location, and secondary fire control.