As jet fighters are concerned, the F-22 Raptor is simply the best. So we were a bit surprised to hear a few months ago that this incredible jet fighter was grounded because of oxygen problems. The system actually did not work on several occasions causing hypoxia for some pilots who nearly crashed due to the lack of oxygen in the cockpit. This problem was so serious that the F-22 Raptor was grounded for 4 months, which is a very unusual move. But it reflects the positive view of the US officials Read More....