When Dr. Nollette is in the wind tunnel, at times his fingers gripping the screen are curled tightly around the mesh; at other times they are straight, affording him no grip against the fan's pull.
On Mulder and Scully's third visit to Mahan Propulsion Laboratory, they are both seen wearing visitor's passes. Mulder's pass has the number 23 in the top right corner while Scully's pass has the number 11. However, during one camera cut from Mulder to Scully, Scully is suddenly wearing the number 23 pass and Mulder is wearing 11.
Turbine engines will sustain heavy damage if an animal is sucked into them. An object as large as a full grown man would cause catastrophic damage and require serious repair before it was operational again. It does not seem that enough time had passed for that to happen in this episode.
Wind speeds of 60+ can uproot trees and blow the roofs off of buildings. The first victim caught in the wind tunnel was still standing at nearly mach 2. At sea level, mach 1 is equal to 761.2 mph. It is impossible for anyone to stand in such high winds.
The obituary that Scully reads states that Dr. Crabill completed his doctorate and post-doctoral work at Harvey Mudd. However, Harvey Mudd College only offers undergraduate degrees.