What principle should be used to apply the first handcuff while maintaining distance?

The reactionary gap principle is essential when applying handcuffs, as it emphasizes maintaining an appropriate distance from a subject to ensure safety and control during the cuffing process. This principle allows the officer to effectively assess the situation, recognize potential threats, and respond appropriately while minimizing risk.

By maintaining a reactionary gap, an officer is positioned to react quickly if the subject attempts to escape or engage in aggressive behavior. This distance not only provides the officer with enough time to respond but also keeps them out of reach of the subject's potential strikes or maneuvers. This strategic positioning ultimately enhances the officer's ability to safely apply the first handcuff while ensuring they remain in a posture that supports control and safety throughout the interaction.

The other principles mentioned pertain to different aspects or techniques in handcuffing and defensive tactics, but for the specific context of maintaining distance during the application of the first handcuff, the reactionary gap principle is the most appropriate and crucial for effective officer safety.