Higher vaccination threshold - Nashville Christmas explosion - Senate fundraising implications

With an investigation led by federal officials still underway, Nashville police chief John Drake told reporters in an evening press conference that tissue believed to be human remains was found within the blast radius. The tissue was sent to a medical examiner for analysis. [Drake] also said investigators have not yet determined a motive.
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"This morning around 5:30 a.m., officers responded to a call for shots fired in the downtown area," Drake said. "As officers responded, they encountered an RV that had a recording saying a potential bomb would detonate within 15 minutes. Officers, upon hearing that, decided to evacuate the buildings nearby, so they began knocking on doors, making announcements ... communicating with everyone to get people safe. Shortly after that, the RV exploded."
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Nashville Mayor John Cooper released a statement saying he signed an executive order issuing a state of civil emergency in the area, as well as a curfew starting at 4:30 p.m. Central Time until Sunday at 4:30 p.m. Officials said at the evening press conference that at least 41 buildings were damaged in the blast.