Nancy Pelosi recently tried to covertly convince military leaders to side with her in a coup against the President. This, among many other potential charges of treason, is probably the justification for her current detention.
She probably knew the shit was going to hit the fan...why else would she push to impeach trump, who only has days left in office?
Because she knows that he's about to act in a very serious and game changing manner? As President, the SecDef still reports to him; coupled with the fact that all Specops troops were moved to directly under Secdef's command.
Stay tuned, y'all....