In iMovie 10.1.2 how can I access original media files — "Reveal in Finder" is no longer an option.

The "Reveal in Finder" option is no longer available when I right click on a movie clip in iMovie 10.1.2. Can I access the original file from within the application (without opening the library package contents)?

I work with teachers who need to get to to original movie files and don't want too many people opening the Library's package contents.