Help badly needed!

[Dr. Laplace]

There's a bug on that mission, I think:

I Just finished playing the game in Sim mode again and got the same two different scenarios you describe: either nothing happens or three drop point to check appear.

1.- Engage the bandits.
2.- If you do choose to help the tank: take out the three vehicles designated as targets.
3.- Rendevouz and Escort the C47s.
4.- ALWAYS STAY CLOSE TO THEM!
5.- Look for the three drops and destroy the trucks.
6.- Enjoy.