Today I completed a tribute trip with the NGX from Saigon to San Antonio via Tokyo, Honolulu, and San Francisco. This is the exact trip my father took on this date in 1967 while returning from Vietnam, as a member of the US Air Force. I still have the flight documents.While flying to Tokyo, I encountered a tail wind that I've never seen before. I'm using Active Sky 2012. This is a screenie:Since the tailwind wasn't exact, I took a little off route jaunt to see what the maximum Ground Speed I could get. This is that screenie:My questions are: Is this even realistic? Have you ever seen this? Can you beat it? I'm sure you can program your weather engine to produce these winds, but this was real world weather downloaded live by AS2012. I did have a nice tailwind the entire flight, but these winds only lasted ten minutes or so. I landed with a lot of extra fuel.