No, not a call to war. Just a reminder that today is the day the COVID-19 standstill from Notice 2020-23 runs out.
So when you run to the post office or the PDS (Blessed Communion, Fellowship Divine division) with your 1040, take along your Tax Court petitions, amendments, and other required snail-mailia, get the postmarks, and save all the receipts. Get it done before 5 p.m., local time.
And tell ’em Lew sent ya.