A crowd listens to the Ambassadors, the U.S. Air Forces in Europe jazz band, as they play music for the 73rd anniversary of the Slovak National Uprising in Banská Bystrica, Slovakia, Aug. 29, 2017. U.S. bands are invited each year to perform for the celebration. Participating in events with NATO allies improves interoperability and strengthens long standing relationships. (U.S. Air Force photo by Senior Airman Tryphena Mayhugh)