We were parked very near the end of one of the runways at LAX waiting for this huge KLM 747 to make its turn on to final for landing. Kevin spotted it first and I was able to use my zoom lens to confirm that the approaching aircraft had 4 engines. This meant it was either the KLM 747 or an A380. It looked like it was going to pass directly overhead so I thought that perhaps switching from my zoom lens to my ultra wide 14mm would be a good idea. The only problem was that the aircraft was rapidly getting bigger and louder. I quickly got out of he car and dug in my backpack for the lens. I could hear the engines howling, blocking out all other sounds. I managed a very fast lens swap and swung my camera skyward just as this behemoth roared overhead. I managed to fire off about 10 frames using my new Sony A99. The focus tracking function worked perfectly! What an amazing experience this was. My ears are still ringing.