The Air Force announced this week a number of efforts to address an uptick in unexplained physiological events experienced by training pilots, including a redesign of the T-6 onboard oxygen-generating system and adoption of new maintenance procedures. In February, the Air Force announced an operational pause of the T-6 fleet, after a sudden increase in the number of pilots reporting hypoxia-like conditions while flying the training jet. The fleet has since returned to flight, but a team of Air Force,...