i feel like there was a Q drop that alluded to D 1-6 being arrested.
if the first 6 people in the presidential line of succession are arrested, then the secretary of defense assumes the position of POTUS.
https://en.wikipedia.org/wiki/United_States_presidential_line_of_succession
Lloyd Austin has an impressive list of achievements. he wouldnt be in that position if Q didnt trust him.
https://en.wikipedia.org/wiki/Lloyd_Austin