First-line supervisors may be responsible for a shift, a squad, a section, or a watch and may be any rank from corporal to lieutenant. Types of squad-level training include roll call training, specialized training, and guest lectures. This training is the most efficient type of training because these supervisors are the people most likely to be in tune with all facets of the facility’s daily operation and the individual squad and have close knowledge of the strengths and weaknesses of each person on the squad. The supervisor can tailor the training to the needs of the squad. The supervisor is also in the best position to evaluate the results of the training and to adapt training as needed. Trainers need lesson plans based on basic research. They may conduct the training module themselves, allow a staff member to prepare and conduct the training, or use a guest lecturer. Jail administrators should allow and encourage first-line supervisors to conduct training so that the agency does not lose this potential for efficient training. Photographs