A pilot from the 493rd Fighter Squadron shows a Bulgarian pilot what the inside of an F-15C Eagle cockpit looks like at Graf Ignatievo Air Base near Plovdiv, Bulgaria Aug. 19, 2014. Pilots, maintainers and a mixture of other professions from Royal Air Force Lakenheath, England, will enhance interoperability with Bulgaria and maintain joint readiness. (U.S. Air Force photo/Senior Airman Hailey Haux)
Senior Airman Skylar Richards, 493rd Aircraft Maintenance Unit crew chief, marshals an F-15C Eagle out of its parking spot at Graf Ignatievo Air Base near Plovdiv, Bulgaria, Aug. 19, 2014. There are many duties a crew chief preforms, one of them being to ensure the pilot taxis in and out of their parking spot safely. (U.S. Air Force photo/Senior Airman Hailey Haux)
Flags flap in the wind at Graf Ignatievo Air Base near Plovdiv, Bulgaria Aug. 19, 2014. More than 180 Airmen from U.S. Air Forces in Europe and Air Forces Africa flew to Bulgaria to participate in a bilateral training event, Thracian Eagle 2014, Aug. 18 through Sep. 1. (U.S. Air Force photo/Senior Airman Hailey Haux)
Two F-15C Eagles and one Bulgarian aircraft (left) prepare to land after training together in the skies of Bulgaria Aug. 18, 2014. Pilots, maintainers and a mixture of other professions from Royal Air Force Lakenheath, England, as well as Airmen from Ramstein Air Base, Germany, will enhance interoperability with Bulgaria and maintain joint readiness. (U.S. Air Force photo/Senior Airman Hailey Haux)
An Airman from the 493rd Aircraft Maintenance Unit waits for the signal to remove the chalks from the wheels of the aircraft at Graf Ignatievo Air Base near Plovdiv, Bulgaria, Aug. 18, 2014. Maintenance Airmen have an important job by keeping the aircraft mission ready. (U.S. Air Force photo/Senior Airman Hailey Haux)
A crew chief salutes his pilot after marshaling him off at Graf Ignatievo Air Base near Plovdiv, Bulgaria, Aug. 18, 2014. There are many duties a crew chief performs, one of them being to ensure the pilot taxis in and out of their parking spot safely. (U.S. Air Force photo/Senior Airman Hailey Haux)
F-15C Eagles sit on the ramp at Graf Ignatievo Air Base near Plovdiv, Bulgaria, Aug. 18, 2014. More than 180 Airmen from U.S. Air Forces in Europe and Air Forces Africa flew to Bulgaria to participate in a bilateral training event, Thracian Eagle 2014, Aug. 18 through Sep. 1. (U.S. Air Force photo/Senior Airman Hailey Haux)
An F-15C Eagle takes off to fly with the Bulgarian air force at Graf Ignatievo Air Base near Plovdiv, Bulgaria, Aug. 18, 2014. Pilots, maintainers and a mixture of other professions from Royal Air Force Lakenheath, England, as well as Airmen from Ramstein Air Base, Germany, will enhance interoperability with Bulgaria and maintain joint readiness. (U.S. Air Force photo/Senior Airman Hailey Haux)
Senior Airman Skylar Richards, 493rd Aircraft Maintenance Unit crew chief, smiles after doing his pre-flight checks on the F-15C Eagle at Graf Ignatievo Air Base near Plovdiv, Bulgaria, Aug. 19, 2014. There are many duties a crew chief preforms, one of them being to ensure the pilot taxis in and out of their parking spot safely. (U.S. Air Force photo/Senior Airman Hailey Haux)
A Bulgarian aircraft takes off to fly with the F-15C Eagle at Graf Ignatievo Air Base near Plovdiv, Bulgaria, Aug. 18, 2014. Pilots, maintainers and a mixture of other professions from RAF Lakenheath, England, as well as Airmen from Ramstein Air Base, Germany, will enhance interoperability with Bulgaria and maintain joint readiness. (U.S. Air Force photo/Senior Airman Hailey Haux)
Tech. Sgt. Jonathan Easter, 493rd Aircraft Maintenance Unit maintenance debrief, sets up shop at Graf Ignatievo Air Base near Plovdiv, Bulgaria, Aug. 18, 2014. Easter is in charge of ensuring correct maintenance records are kept on the F-15C Eagle. (U.S. Air Force photo/Senior Airman Hailey Haux)