I am a bit hazy on the dates, but I flew TJTs from about 2001 thru May 2003. I know because I was then heavily caught up in NASA's Return To Flight (RTF) in the Post Columbia accident recovery and, as such, no longer had the time to fly a lot. Besides, I never sold engines, just flew the urine out of them as demos at events. I think that by 2007, TJT had dissolved......