Sorry for shit format, at work and trying to piece this together on the fly.
Pompeo tweet with .gov link ending in xA89E
Very next tweet includes the word key and Pennsylvania
Roman numeral x = 10, other letters capitalized A1B2C3... 10 + 1 + 89 + 5 = 105
Drop 105 Pennsylvania is the keystone state; search drops for keystone to find these lines -
Be [p]repared. Ope[r]ations underway. Operators [a]ctive. Graphic is essential. Find the ke[y]stone. Help appreciated, further research needed??
Any time I see text like that, I think hexadecimal. The hex value would be A89E, when converted to 64 bit signed integer, you get 43,166. Look at post 43 & 166. Those, imo, are much more applicable today.
To add coincidence to my post, the dates posted are 02 and 20 of Nov.