Members of the 11th Security Forces Squadron give a working dog demonstration to spectators at the Joint Base Andrews Heritage Park Concert, July 12, 2014. The concert series was designed to show appreciation to the local community for their support and showcase JBA's dedicated Airmen. This was the second of three concerts scheduled for this summer. (U.S. Air Force photo/Tech. Sgt. Brian Ferguson)

Members of the 11th Security Forces Squadron give a working dog demonstration to spectators at the Joint Base Andrews Heritage Park Concert, July 12, 2014. The concert series was designed to show appreciation to the local community for their support and showcase JBA's dedicated Airmen. This was the second of three concerts scheduled for this summer. (U.S. Air Force photo/Tech. Sgt. Brian Ferguson)

Spectators are given a tour of a UH-1N Huey helicopter from the 1st Helicopter Squadron at the Joint Base Andrews Heritage Park Concert, July 12, 2014. The concert series was designed to show appreciation to the local community for their support and showcase JBA's dedicated Airmen. This was the second of three concerts scheduled for this summer. (U.S. Air Force photo/Tech. Sgt. Brian Ferguson)

Senior Master Sgt. Thomas Scott Hinds conducts the Ceremonial Brass as they play for spectators at the Joint Base Andrews Heritage Park Concert, July 12, 2014. The concert series was designed to show appreciation to the local community for their support and showcase JBA's dedicated Airmen. This was the second of three concerts scheduled for this summer. (U.S. Air Force photo/Tech. Sgt. Brian Ferguson)

Col. Bill Knight, 11th Wing and Joint Base Andrews commander, left, thanks members of the 11th Civil Engineer Squadron, July 12, 2014, for their dedication and hard work on the newly constructed Heritage Park on Joint Base Andrews, Md. The park will play host to three concerts this summer, designed to show appreciation to the local community for their support and showcase JBA's dedicated Airmen. This was the second concert in the series. (U.S. Air Force photo/Tech. Sgt. Brian Ferguson)

Senior Master Sgt. Ryan Carson, a vocalist for "Max Impact," performs during the Joint Base Andrews Heritage Park Concert, July 12, 2014. The concert series was designed to show appreciation to the local community for their support and showcase JBA's dedicated Airmen. This was the second of three concerts scheduled for this summer. (U.S. Air Force photo/Tech. Sgt. Brian Ferguson)

Senior Master Sgt. Ryan Carson, a vocalist for "Max Impact," performs during the Joint Base Andrews Heritage Park Concert, July 12, 2014. The concert series was designed to show appreciation to the local community for their support and showcase JBA's dedicated Airmen. This was the second of three concerts scheduled for this summer. (U.S. Air Force photo/Staff Sgt. Torey Griffith)

Members of the U.S. Air Force Honor Guard Drill Team perform during the Joint Base Andrews Heritage Park Concert, July 12, 2014. The concert series was designed to show appreciation to the local community for their support and showcase JBA's dedicated Airmen. This was the second of three concerts scheduled for this summer. (U.S. Air Force photo/Staff Sgt. Torey Griffith)

Senior Master Sgt. Ryan Carson, a vocalist for "Max Impact," interacts with audience members at the Joint Base Andrews Heritage Park Concert, July 12, 2014. The concert series was designed to show appreciation to the local community for their support and showcase JBA's dedicated Airmen. This was the second of three concerts scheduled for this summer. (U.S. Air Force photo/Staff Sgt. Torey Griffith)

Senior Master Sgt. Ryan Carson, a vocalist for "Max Impact," performs at the Joint Base Andrews Heritage Park Concert, July 12, 2014. The concert series was designed to show appreciation to the local community for their support and showcase JBA's dedicated Airmen. This was the second of three concerts scheduled for this summer. (U.S. Air Force photo/Staff Sgt. Torey Griffith)