Can I add Flash Player installer to a USB/ flash drive, for an unknown OS and browser?

I am creating a training video, that will play for a few minutes then automatically pause (using hot spots).  After a discussion, the viewers will then manually continue the video.  There will be several pauses/ manual advances, throughout the video.

I realize that this feature will only work if the file is being played back within the Flash Player.  My challenge is that the viewers may not have an internet connection. 

Ideally, the video will be supplied to them on a USB/ Flash Drive (DVD's, with chapter markers, is not an option).  If they do not have internet, then it's likely that they do not have the Flash player installed on their machine.

Could I add a Flash Player Installer to the USB/ Flash Drive?  I won't know what system they are running or if they are savvy enough to install the correct player, if I provide multiple options.

Is there a different solution?