 Yeah. And how long? But then Barbaro's like. At some point, do we just get to go back to normal? And then McNeil says, look, this pandemic will end. When we have a vaccine that we can all take. The vaccine's the thing that's going to end this. But the record we've ever had for producing a vaccine is four years. The fastest vaccine we've ever made was the mumps vaccine. Yeah, the fastest human vaccine ever made was mumps, four years from start to finish.