You, and 8 decide to head to level-B which was above Level-C of the facility, in hopes of finding Dr. Steinburg. Level-B was the only floor in the facility that reveals the cafeteria, along with a bunch of other rooms that are filled with dangerous GET's who would transform you like the President, and the guards you were with.
You both then notice a locker full of rifles that the guards left behind that was left open, and grab a rifle for yourself to defend yourself. "Hey 10, look at this," 8 says, and you take a look at what she wanted you to see. As you notice, you find a trail of what looks to be blood, due to the color of it, but it looked too bright to be that. 8 smells the stain trail, and figures it out. "It's red paint," 8 explains. "If we follow the trail, we might be able to find Dr. Steinburg. Let's get going, and see where this leads."