Yep. They are used to large-scale planning and logistics into difficult terrain and situations. Like a region that just got hit by a hurricane.
Plus it would be valuable and realistic training for the logistics and support units: "go to location X, and set up mobile water purification, field kitchen, etc. Let's see how fast you can get there and be ready to feed and give water to people".
Plus a week-long inside-US cross-country deployment would test the soldiers child-care arrangements, which always seems to result in a bunch of troops (mostly single moms) declaring they are unable to go whenever a sudden overseas deployment is called.
Can you imagine how much worse this situation would be had Sandy been a Cat 2 or bigger storm?