What is the entity contracted by DoD organizations to book and ticket travel reservations?

The correct choice identifies the entity that is specifically set up to manage travel reservations for DoD organizations. A Travel Management Company is a specialized service provider that assists with booking and ticketing travel for government personnel, ensuring compliance with federal travel regulations and policies. These companies streamline the process of arranging travel, providing options that align with government travel guidelines, and often offer additional support services such as travel itineraries, cost management, and reporting capabilities.

In contrast, the Government Travel Office primarily focuses on travel policy implementation and oversight rather than directly booking tickets. The Transportation Security Administration is responsible for security in U.S. transportation systems and does not handle travel bookings. Meanwhile, DoD Travel Service refers more broadly to travel-related services rather than being a specific contracted entity focused solely on travel bookings. Therefore, understanding the role of a Travel Management Company and its function in the DoD context clarifies why this is the correct answer.