Research on safety climate has focused on supervisor attitudes and their relationship to the attitudes of their direct reports. This study examined the relationship of supervisor behaviors on direct report attitudes that in turn affect group level safety climate among firefighters. This study aggregated perceptions of supervisor trust, leader- member exchange, behavioral integrity, supervisor after action review behavior, and safety climate to the group level to examine the relationship between supervisor behaviors, direct report attitudes and group safety climate. This study found that supervisor trust, behavioral integrity, and supervisor after action review behaviors have a strong positive relationship to safety climate. Further, perceptions of trust partially mediate the relationship between supervisor after action review behaviors and group level safety climate. Future research ideas, theoretical advancements, and practical applications are discussed
