Ohwell:
The tourists are controlled by the US, so you can't disband them.
That is to ensure they disperse uncontrollably all over the country, hindering the war effort. They have to act as annoying as tourists do...
Mikoyan:
I researched and concluded that there were two main fighters, the Mirage and the Kfir. But the most used was the Mirage and the Kfir is an improved Mirage.
Ramsses:
Sounds strange. Try clicking on the link with your right mouse button and select "Save destination" or "Download" or whatever it is called in Dutch...
Yop:
Druglord units are hidden - they have the submarine abilities, and if you look in the pedias for the units (or press F2) you will see which units that are able to see them. You will find them easily in the country side - sooner or later you'll bump into them. The tourists are mainly seen in the safe areas - around Bogotá, Cartagena, and Barranquilla. Slowly they will scatter and you will see them - possibly when they become more frequent later in the game.