What must the last OT entering a building do with an open door?

The requirement for the last officer trainee entering a building to close the open door is rooted in the principles of security and discipline within a military context. Closing the door helps maintain order, prevents distractions, and ensures that the internal environment remains controlled. It also serves to enhance security by minimizing the risk of unauthorized entry and maintaining the confidentiality of operations or communications happening inside.

By closing the door, the last trainee demonstrates adherence to protocols that prioritize the integrity and security of the space. This action reflects responsibility and consideration for the collective environment of the unit, reinforcing the importance of following established procedures.