The Boeing B-17 Flying Fortress and the Consolidated B-24 were the United States' two standard heavy bombers until the arrival of the Boeing B-29 Superfortress in 1944. The B-17 served in almost every theater of World War II, but it used mostly by the US Eighth Air Force, based in the UK, to bombard German targets.
8) Ainât No Mountain High â Did you know there are twenty mountain themed Disney attractions? Expedition Everest is the tallest of them all standing at a massive 199 feet tall. However, this is not the tallest mountain in the state of Florida. Britton Hill is almost double the height of Expedition Everest.
Is the air very thin on Everest? As the altitude increases, the oxygen content of the air decreases dramatically. At 9,800 feet, for example, there's about 2/3 of the oxygen in the air than at sea level. At 20,000 ft, there is roughly half the oxygen content in the air. At 29,035ft, the summit of Everest, there is only a third of the oxygen in the air. How does your body get used to the altitude? Mountaineers climbing Everest establish a camp at the base of the mountain, and four higher camps before reaching the summit.