You’re thinking too hard.
They wouldn’t do it nationwide. martial law would only be declared in certain areas. Troops and agents would be moved out of peaceful places and concentrated into the areas where martial law is declared.
My family and I live in the country..away from the big city..closest being charleston wv, 35 min away.
Ive already sent out invitations to some prepared friends to bring their sleeping bags or campers and to stick with us. these folks will bring their own guns.