Carlos Nellen, a Camp Lemonnier, Djibouti, firefighter from San Diego, checks the heart rate of a Djiboutian national hoping to be recruited by CLDJ's fire department as he receives medical attention after participating in the stations firefighter agility drill, April 24. The agility drill is an obstacle course that tests the endurance, strength and basic skills of firefighters and is used as a benchmark for potential firefighter recruits.