If the Army pulls a trained respiratory therapist into active duty because that skill is critically needed...
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I thought the US military cannot fight against its citizens. Or is this what the 2nd amendment protects from?
That's what the Founders thought, too.
Lincoln disagreed.
you are thinking of posse comitatus. That law has exemptions, national emergencies, insurrection, invasion all void it. I am as someone who may very well be recalled into the Army by the recent EO my specifically is urban policing and quick reaction force as an military police officer. The MP can and will uphold order stateside in this national emergency we are exceedingly good at it. If looting and rioting happen expect the Army and the Guard to put it down.