Well, it is a perfect crisis to exploit. Whatever he does with it you can be sure it will have a totalitarian flavor to it.
a. Call out Armed Forces
To suppress lawless violence, invasion or rebellion
Not subject to congressional approval or judicial review
President vested with full discretionary power to determine factual basis for calling out armed forces.
b. Suspend the privilege of the writ of habeas corpus
i. In cases of rebellion or invasion and when public safety so requires
ii. Applies only to persons judicially charged for rebellion or offenses inherent in or directly connected with invasion
c. Declare martial law
In cases of rebellion or invasion and when public safety so requires
Does not suspend Constitution
Does not supplant functioning of civil courts or Congress
Does not authorize conferment of jurisdiction on military courts and agencies over civilians where civil courts are able to function
Does not automatically suspend writ of habeas corpus
For period not exceeding 60 days; may be extended by Congress through majority vote of all members of Congress yoting jointly, upon initiative of President if invasion or rebellion persists and public safety requires
No congressional concurrence required, but Congress has power of revocation through majority vote of all members of Congress voting jointly; revocation cannot be set aside by President