Getting More Pieces Ready for Marshal Law - Just in Case

This year's DoD Authorization bill contains a Section (1605), setting plans for collusion with the Police for Martial Law in the event of an Emergency. Why would the Pentagon be planning Martial Law if it didn't plan on implementing it?

This pending Law comes on top of the White House Directive claiming dictatorial powers to "coordinate" the continuity of "constitutional" government during such Emergencies, which will happen since examples of emergencies include minor terrorist acts like the building attack of 9/11 and the Katrina storm that hit New Orleans. Since "Constitutional" means separation of powers among the three branches of government, for the Executive Branch to assume control of "coordination" means dictatorship.