@Abdullahmusaad0 As she missed a step, the lady’s left hand instantly grabbed the handrail. This scene unfolded right before the guards’ eyes, and it had not yet triggered any real risk of falling — on this point, one should trust the military personnel’s professionalism.
Putting your feet on the front-row armrests is only acceptable if you’re alone in your own private space for the purpose of relaxing; otherwise, it taints your personal manners and upbringing.