At about 39:10 timing, when the camera panning across a window looking into Dr. Phlox's sick bay, several unmarked jars and bottles can be seen on a shelf. At the end of the camera pan (and obviously not intended to be seen) is a 1.5 liter bottle of "Crystal Geyser" brand bottled water, with the distinctive red and blue label.
Captain Archer asks who has experience in caves and Mayweather is the only one who says that he does. In episode 1:4 (Strange New World) T'Pol, Tucker, Mayweather explore and spend the night in a cave; episode 1:6 (Terra Nova) Archer, Mayweather, T'Pol, Tucker, Phlox spend quite a bit of time traveling in the cave system; episode 2:10 (Vanishing Point) Tucker and Sato spend time examining ruins inside a cave.