As a Veteran Owned Business we believe in managing on the front lines. If you have Dahlcore as your security service provider you already know that we are personally managing all of the security guards. Not only in the office, but in the field as well. Staten Island, Brooklyn, Manhattan, Queens, Bronx, and Long Island Dahlcore is there front and center. Security is more than a business, it is a responsibility. A responsibility to our clients and our Security Officers.