Starting with the Entrance
The plane has two entrances. The President, his family, and distinguished guests use the front entry near the plane’s nose. You’ve probably seen photographs of the President waving as he enters and exits the plane from this spot. Journalists and other personnel should use the second entrance.
Source: ABC News
Both exits of the plane have retractable stairways. Crew workers and staff climb internal staircases to reach the upper decks accessible from the lower deck. It’s an incredible sight, and it’s unlike anything else I’ve ever seen.