I think the photo is genuine for these reasons
To get "so close" a large focal lenght lens must have been used, i would suggest 400-600mm. The larger the focal lenght the higher the magnification. The larger the focal lenght the less distortion you get, as in this case there is very little if any perspective causing lines to diverge, hence the strange look to the runways.
High resolution digital cameras coupled with image stabilisation lenses are well capable of obtaining images like this without any photoshop tinkering.