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We're looking at the company that makes it. We're looking at their ability to produce more. We're talking to them about contract manufacturing in the United States and being able to produce more vaccines here, so we're looking at a whole range of options. Obviously, if other tools that the federal government has at its disposal are helpful, we will not be shy about invoking those tools. But right now, we are looking at these sets of factors to see how much more vaccine can we get in United States.