Even though they can do that without the Governor's permission only in DC, that's starting to cross a thin, red line if we see more low-flying demonstrations of show of force, which can be dangerous due to the large size of a Blackhawk and close proximity to the ground which equals snapped trees, flying debris, etc. It's intimidation.

To blow the tear gas away so the president could walk across the park

Dick-waving- nothing is going down here tonite.

Link to tweet