Bill Nelson: “It is either 'congratulations' to you, but it is also 'thank you' for 4 decades of extraordinary service.”

I would say that there is a significant difference of opinion about that.

One of the reasons you and I were able to accomplish so much on this committee is both of us worked very hard to keep politics out of NASA and to focus on the core mission of exploration.

Let me define the problem and give you the background.

that would mean 25 percent less fuel, which is a good thing for the airlines, but might also be a good thing in the overall energy policy of the country.