instead of bases itll be a city... the terrorist are plotting to destroy the building the pres is in... there are multiple sets of plans to kill the pres... the only way to know what the plans are is to send a spy in to retrive it... then once the spies retrive it gdi will now know what the plans are... so now they have to stop it... and all this time terrorist have been setting up... so gdi has to get the pres to safety... the map could be like a big office building next to a supermarket with other misc buildings around... the basement of the supermarket is where the terrorist are planning the stuff...

what do ya think?...