At the same time, Concourse E's immigration and customs facilities were radically overhauled and expanded. Other game mechanics have been overhauled and updated. All spaces and machinery were also completely overhauled and refurbished. Dockyards of the Royal Navy are harbours where ships are overhauled and refitted. The project completely overhauled the original DC-9 into a modern airliner. Such "logic errors" require a section of the program to be overhauled or rewritten. The opening was overhauled completely in this version. The opening was overhauled completely once more in season three. In 1942, the air defense system on these ships was overhauled completely. In September 2015, the website was completely overhauled and most of the features were removed. The program was overhauled in 2004, and phased out in 2005. The character development system has been overhauled. In addition, the mechanical and electrical systems were completely overhauled in each terminal. It was overhauled and renumbered 3204 in 2016. In have recently overhauled their entire range.