In April, following hypoxia-like episodes in T-45s, the US Navy imposed an “operational pause” on the type which, on pressure from aircrew, was extended indefinitely. However, after briefings and discussions with aircrew, the training wing leadership, engineers, and aeromedical experts, a way was found to resume flight operations safely, whilst a permanent solution is sought, by limiting the maximum cabin altitude to below 10,000 feet, avoiding the use of the on-board oxygen generating system (OBOGS). The F/A-18E and F Super Hornet is also affected by similar OBOGS problems.