The Navy's 30-day review reveals few answers for cockpit air problems
Navy pilots have reported 461 physiological episodes in F/A-18 fighter jets and T-45 trainer aircraft since May of 2010 — an average of more than one every six days, Navy officials say.
Yet the source of the problem remains unclear despite years of study and the recent completion of a 30-day review led by Adm. Scott Swift, commander of the Pacific Fleet.
https://www.navytimes.com/articles/navy-cockpit-air-problems-30-day-review