In my city, when there is potential for violence involving police operation to arrest or diffuse a situation, they bring in SWAT teams, marksmen, plus all other types of resources as backup. This to minimize risk to officers and civilians, and with the aim to diffuse the situation as peacefully as possible, but if need be, to contain any resulting violence. So, why not the Navy utilize their available resources to ensure the same results.
Germany shelves Nazi crimes probe of US national Karkoc (AP)
from the article: The chief of staff threatens