Which document addresses security design at airports?

• A. Airport Operations Manual
• B. Ground Security Protocols
• C. TSA Security Directive
• D. Recommended Security Guidelines

Answer: (D)

This item tests recognizing what type of document provides guidance on how to design airport security features. Security design guidance is typically found in recommended security guidelines, which lay out best practices and principles for building and arranging physical and procedural controls—things like access control, screening zones, perimeters, surveillance, and layered security concepts. These guidelines help planners and engineers make informed design choices that reduce risk.

The airport operations manual mainly covers day-to-day operations, procedures, and responses during regular activity or incidents, not the architectural or systems design of security. Ground security protocols focus on how to perform security-related tasks and responses on the ground, rather than detailing design principles. TSA security directives are mandatory requirements issued to address specific vulnerabilities or incidents; they specify what must be done, not general design guidance. Therefore, the document that addresses security design at airports is the set of recommended security guidelines.