This has me nervous. AZ has already been called for Biden by some news outlets including Fox News.

And here is the reporting by NBC: https://www.youtube.com/watch?v=Nd9mdelRKfk

And there is more reporting from WaPo:

“Crowds targeted election centers in other cities on Wednesday as well, including in Detroit, where Republican election challengers shouted “Stop the count!” and demanded access to the room where votes were being counted, though Democratic and nonpartisan election challengers were also barred from the room. Two dueling crowds also faced off at the Clark County Elections Department in Nevada, where Biden’s advantage appears to be even smaller than in Arizona.AD

But the election officials on duty Wednesday in Arizona did not pause the poll workers’ vote counts, even as protesters angrily shouted at them through walls.

Police escorted Maricopa County election workers to their cars late Wednesday night as protesters chanted and rallied for hours outside. Several members of the crowd openly carried firearms.