<p>The presence of COVID-19 has generated changes in work and self-care routines in the overall population, however, the members of the first response teams have found themselves in the necessity to develop different forms of adaptability to this event. The objective of this study was to provide evidence about the predictive power of experiential avoidance on hostility and anxiety in a population of firefighters who have been exposed to patients diagnosed with, or who have symptoms of Covid-19. The population is made up of 257 participants, 59 women and 198 men, who voluntarily gave their answers to the online questionnaire. The results found that 10.5% of the women and 29.60% of the men showed hostility; Furthermore, it was identified that 12.2% of the women and 30.7% of the men showed anxiety. On the other hand, it was possible to identify through the modeling of structural equations that experiential avoidance is a mediating variable among the subjective perception of severity, Anxiety and Hostility. By means of this research, it is possible to provide updated data on the psychological impact that firefighters have had since the start of the health crisis.</p>