This presentation is what they show everyone (including civilians) before they start the museum tour. There are three major what they call "emersions" during the tour.
The first is what it was like to be in the first wave of landing craft going into Iwo Jima; the second is what the breakout from Chosin Reservoir was like and includes cold (but not freezing air conditioning); and the last one is what it was like in an CH-46 making a landing in a zone complete with shakes, rattles, and rolls plus the smell of oil and hydraulic fluid.