Trump has explained why he switched back to the old Air Force One rather than flying in the Qatari-gifted jet amid scrutiny over security concerns. Trump told reporters Wednesday he was taking the older plane home “for old time’s sake” while the $400 million jet tours an air force base housing U.S. troops. When asked later Wednesday en route to Joint Base Andrews in Maryland after leaving this week’s NATO summit in Ankara, Turkey, about a potential security concern that could have caused the switch, the president denied there was one.