From Montgomery County Office of Homeland Security and Emergency Management:
The Department of Defense, in conjunction with multiple Montgomery County law enforcement agencies and other local and federal law enforcement agencies, is conducting training in Montgomery County through the end of the week.
This exercise has been planned long in advance in cooperation with local authorities. It is not in response to any current world events and is expected to have minimal impact to our community.
Residents may hear noise or see helicopters in the evening and early morning hours during these exercises. This type of collaborative training between local, state and federal partners is very common as we continue to work to provide the best service to the public.