About $22 billion of SpaceX’s government contracts are at risk and multiple U.S. space programs could face dramatic changes in the fallout from Elon Musk and President Donald Trump’s explosive feud on Thursday. The disagreement, rooted in Musk’s criticism of Trump’s tax-cut and spending legislation that began last week, quickly spiraled out of control. Musk and Trump’s tussle ruptured an extraordinary relationship between a U.S. president and industry titan that had yielded some key favors for SpaceX: a proposed overhaul of NASA’s moon program into a Mars program, a planned effort to build a gigantic missile defense shield in space, and the naming of an Air Force leader who favored SpaceX in a contract award.Taking the threat seriously, Musk said he would begin “decommissioning” SpaceX’s Dragon spacecraft used by NASA. SpaceX rose to dominance long before Musk’s foray into Republican politics last year, building formidable market share in the rocket launch and satellite communications industries that could shield it somewhat from Musk’s split with Trump.

