Guard training must provide orientation for new officers; instruction in weapons use, procedure, and equipment use; and retraining according to changing security requirements. Training should (1) emphasize how the information will be used, (2) involve trainee participation, (3) provide time for the trainee to digest the information, (4) emphasize what is most important, and (5) instill in the trainee the desire to learn. Report writing is an important aspect of the guard's duties, because it is a means to inform, record information, document a security officer's activities, and protect the guard from any charge of negligence or faulty memory. It is also the responsibility of the security officer to review a safety checklist regularly to ensure that employees are not exposed to a dangerous environment. A guard should be prepared to deal with a bomb threat by knowing the principles and techniques of a bomb search, the precautions to be taken, and types of explosives. In the area of fire protection, security guards should be familiar with the available firefighting equipment, including knowing when and how to use it. The guard should also know what general procedures to follow in dealing with a fire and ensuring the safety of employees. A checklist of fire prevention procedures should also be regularly followed by security officers. An officer must be prepared to provide emergency medical assistance, including the control of bleeding. The supervision of guards involves effect listening, keeping communications with guards open, setting an example, providing effective training, treating employees courteously, developing loyalty, knowing when to criticize, and providing personal counseling.