9/14/2012 - SPANGDAHLEM AIR BASE, Germany – A patch rests on the sleeve of Bulgarian air force Maj. Iliyan Antonov during a Bulgarian air force visit Sept. 12 here. The tour serves as a way for the United States and Bulgaria to learn and exchange ideas about each other’s air force to ensure air dominance in any contingency operation. (U.S. Air Force photo by Airman 1st Class Gustavo Castillo/Released)

9/14/2012 - SPANGDAHLEM AIR BASE, Germany – Members of the Bulgarian air force observe 606th Air Control Squadron radar operations during a base visit Sept. 12 here. The tour serves as a way for the United States and Bulgaria to learn and exchange ideas about each other’s air force to ensure air dominance in any contingency operation. (U.S. Air Force photo by Airman 1st Class Gustavo Castillo/Released)

9/14/2012 - SPANGDAHLEM AIR BASE, Germany – Bulgarian air force Senior Master Sgt. Kalin Krumov, left, and Maj. Iliyan Antonov, overlook the radar operations of the 606th Air Control Squadron Sept. 12 here, during a visit from the Bulgarian air force. The tour serves as a way for the United States and Bulgaria to learn and exchange ideas about each other’s air force to ensure air dominance in any contingency operation. (U.S. Air Force photo by Airman 1st Class Gustavo Castillo/Released)

9/14/2012 - SPANGDAHLEM AIR BASE, Germany – U.S. Air Force Senior Airman Garret Adams, left, and Airman Ethan Wood, 606th Air Control Squadron ground radar systems technicians operate an AN/TPS-75 transportable aerospace control and warning radar Sept. 12 here, during a visit from the Bulgarian air force. The tour serves as a way for the United States and Bulgaria to learn and exchange ideas about each other’s air force to ensure air dominance in any contingency operation. (U.S. Air Force photo by Airman 1st Class Gustavo Castillo/Released)