US Air Force (USAF) STAFF Sergeant (SSGT) David Miranda, a Dedicated Crew CHIEF on a MQ-1L Predator Unmanned Aerial Vehicle (UAV), inspects the angle of an attached instrument on its engine during a Preventative Maintenance Inspection (PMI). Miranda is assigned to the 46th Expeditionary Reconnaissance Squadron (ERS) at Balad Air Base (AB), Iraq (IRQ)