White Knight and Exeng: regardless of which seat, it is your job to say or do something. I Suggest some height callouts from the radar altimeter, reach for the controls (the flying pilot will see this out of the corner of their eye and flare)or take the controls as a last resort. Even if you're not the Captain, you were hired as a future Captain, use your leadership skills. You can always apologize later and explain it seemed they were distracted and that you thought you were about to die from spinal compression.