Option 1 - Mouseover Tabs
Each tab would have a listing of personnel.
Option 2 - Slideshow
We can make different sections based on the four types ( 4 different slideshows), or one big slideshow. Options 2, 3 and 4 will be easier to update.
Option 3 - Gallery
You click on the thumbnail below and a lightbox with the information is opened. The lightbox allows you to read the content better and flip through them, while allowing us to make them fit in a smaller space on the main page.
I would have 4 sections of these.
Option 4 - Carousel
More limited functionality than the slideshow, but you can flip through them a little faster.