Article continues below advertisementDonald Trump is once again causing concern about his health after a string of awkward moments during his recent Asia tour.As he wrapped up his trip in Japan on Tuesday, October 28, cameras caught the former president slowly stepping off Air Force One - tightly gripping the handrail and staring down at each step. Trump has previously admitted he now takes "extra care" when walking down stairs, telling Marines this month that he shouldn't "bop down the stairs" as he needs to take slow, careful steps instead.