The headquarters of the Republican National Committee was briefly placed on lockdown Wednesday morning and the hazardous materials team from the United States Capitol Police responded to the scene on Capitol Hill. According to sources reported by NBC News, the emergency response stemmed from a package containing vials of blood that was sent to the RNC's offices just a few steps from House office buildings.NEW: Three sources tell @NBCNews vials of blood were sent to the RNC... https://t.co/iRhiH2O1rK— Dasha Burns (@DashaBurns) May 22, 2024Capitol Police told NBC News that the package was contained and removed by its personnel while another...