My experience with msi's has been it's not possible to run 2 at the same time. (could be wrong though).
I would create a custom action that runs in the InstallUISequence. This would download the MSI if necessary (to the source folder), and then try to launch it as a nested installation.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.