Alliance Detective & Security Service, Inc is an SEA-certified company that will keep your property and people safe with patrol services 24/7!

Guard Services

Whether you need a security guard service for a permanent or temporary situation, call Alliance Detective & Security Service, Inc.

Executive Protection Services

Ensure your safety with discreet professional protection services. Tailored to your lifestyle and business needs. Our elite team of trained experts provides 24/7 security.

Alliance Detective & Security Service, Inc is trusted by the US government for classified security jobs. We are proud of our dedicated and bias-free workplace!

Transportation Security

Alliance Detective & Security Service, Inc works with the TWIC (Transportation Worker Identification Credential) program.

About

Alliance Detective & Security Service, Inc provides security services at the federal, state, and city levels. Trust in our over 45 years of experience.