John McCain was the “He” Trump was referring to in this quote from 2015. A former Navy pilot, McCain spent roughly five-and-half years in a notorious North Vietnamese prison known as the “Hanoi Hilton,” where he was repeatedly tortured. He spent two of those years in solitary confinement.
“I don’t have a problem standing up to someone who was working on season seven of ‘Celebrity Apprentice, while I was packing my bags for Afghanistan.” – Pete Buttigieg