"The other hovered briefly and then came across the near runway towards the big hangars and some shop buildings. It took up a position somewhere above the buildings over the tarmac. The disc had a good vantage point of anything that might come towards the president's plane and the disc on the ground. It was with some disbelief that two UFOs had come to Holloman AFB in February of 1955. There was little background for believing in them at all as extraterrestrial. Some who saw or heard about the two craft at the base that day thought they might be new Russian or German innovations.
Soon after the UFO landed in front of Air Force One, a man many assumed to be the President, came to the doorway of the plane, descended the portable stairs and approached the saucer on the ground. Some sort of a hatch had been opened a few minutes before and had folded down to become a small ramp. The man walked up the ramp, stood briefly at the opening, shook hands with someone, and went inside.
Observers thought the period of time to be about 45 minutes. When he emerged from the craft, he walked towards Air Force One. Part of this time he was facing the observers, and most were sure it was Ike. He wore no hat, and many recognized the hairline and his erect military walk. More here