Which NIMS Management Characteristic includes documents that record and communicate incident objectives, tactics, and assignments for operations and support?

The correct choice focuses on "Incident action planning," which is a critical component of the NIMS Management Characteristics. This process involves the systematic planning of incident objectives, strategies, and operations to effectively manage and mitigate emergencies. Incident action planning ensures that all personnel involved in the incident are aware of the objectives and their respective roles, which facilitates better coordination and communication among different teams.

The documentation generated during incident action planning includes what's referred to as the Incident Action Plan (IAP). The IAP outlines the specific goals, operational tactics, and assignments for personnel working on the incident and supports the dynamic nature of incident response. This systematic planning is essential for ensuring that the response efforts are aligned and organized, thereby improving operational effectiveness.

The other options, while related to emergency management, do not specifically emphasize the documentation and communication of incident objectives and tactics within the operation. Emergency operations planning refers to broader strategies for responding to emergencies; resource allocation planning deals with the distribution and management of resources; post-incident analysis focuses on reviewing performance after the incident. These do not directly capture the essence of incident action planning, making the first choice the most appropriate answer.