If you can only launch SLS once every 2 years, and the engines aren't being produced anymore what's the point?
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Just call SLS what it is - a welfare program for Boeing engineers and a vote purchasing program for northern Alabama.
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Cancel it and give the money to Space X.
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Unfortuately all that AWESOME data will end up getting dumped into the Indian Ocean . . . and Boeing will get a few million more taxpayer dollars to keep their engineers employed . . . . . <sigh>