There are many Security Guard Services New York City, ranging from small local companies to large national organizations. Here are a few options to consider:

SOS Security - They offer a range of security services including armed and unarmed guards, mobile patrol, and executive protection.

Premier Security - They provide security services for commercial properties, residential buildings, and special events.

Global Security Group - They offer security services for various industries, including healthcare, retail, and construction.

USPA Nationwide Security - They provide security services for businesses, government agencies, and events.

Titan Security Group - They offer a variety of security services, including mobile patrols, fire safety, and access control.

When choosing a security guard service, it's important to consider factors such as experience, reputation, and the specific services offered. You may also want to look for companies that offer customizable security solutions tailored to your specific needs.