Mobile, expandable structure, assembly support system

A mobile expandable structure comprising:

• a central structure, said central structure having a central roof section, a pair of endwall assemblies, and having a central floor mounted to a base;
• the area between said central roof section and said floor and said endwalls defining a central cavity;
• said endwalls having a bottom endwall panel and a top enawall panel, said top endwall panel communicating with said central roof section at a first end and extending downward to a distal end;
• at least one side section;
• said side section having a side roof section and a side base with a side floor panel thereon;
• said side section having a side wall, said side wall having an upper sidewall section and lower sidewall section attached to said side base;
• said side section having side endwalls, said side endwalls each having an upper side endwall panel and a lower side endwall panel attached to said side base;
• said side section translatable from a stored position retracted into said central cavity to an expanded position projecting from said central cavity;
• said central roof section, said side roof section, said upper sidewall, and said upper side endwall panels cooperatively engaged to concurrently elevate together as an upper unit, from a static position adjacent to said base, to an elevated position elevated above said base;
• means to raise and lower said upper unit between said static position and said elevated position;
• means to translate said side unit from said stored position to said expanded position;
• a door entry means communicating between said central cavity and the exterior of said mobile expandable structure;
• said door entry means formed of an upper door section and a lower door section;
• said upper door section formed in one of said upper sidewall or said upper side endwall panels;
• and
• said lower door section formed in one of said lower sidewall or said lower endwall panels and directly under said upper door section.