@mikeh2017 hi! My flight was much much shorter than yours, only about 2.5 hours. So I am not sure if this would make a difference. I have a feeling you are more likely to get hit during take off and/or landing when there is a rapid altitude change. As opposed to once the plane has reached its cruising altitude. I had ice cold Red Bull ready with me. I also had no caffeine the day before each flight. I began the loading dose of the d3 regimen for a week prior to the flight. I think this particular bit helped tremendously. Also, I drank tons and tons of water to make sure I wasn’t dehydrated in any way. That is a big trigger for me. I took 2 500 mg Tylenol 30 min prior to take off and landing. I also dosed with shrooms about 2 or 3 times leading up to the trip. I’m not sure on what your access is via this route. It would help to note I am not currently IN cycle, but I have found that for me, even when I’m not in cycle I can trigger an attack. Drinking alcohol, not enough water, lack of sleep etc. I hope this helps!