What immediate action should follow an apprehension in a military context?

Completing AF Form 3545 is the correct immediate action to follow an apprehension in a military context because this form is specifically designated for documenting incidents involving apprehensions. It ensures that all relevant details regarding the apprehended individual and the circumstances of the apprehension are captured in an official format. This documentation is crucial for both legal and administrative purposes, creating a record that can be referenced in future proceedings or investigations.

In the military, proper documentation is fundamental to maintaining accountability and facilitating any subsequent actions that may need to occur, such as disciplinary measures or legal actions. AF Form 3545 serves as a standardized tool for this purpose, which is why it is prioritized as the immediate action after an apprehension.