As the county ZOZ reports:

St. Łukasz Hospital in Bolesławiec, in cooperation with US Army soldiers stationed in Trzebień, conducted transport exercises involving a large number of casualties.

The facility adds:

The simulated incidents at the American base provided an opportunity to test civil-military cooperation and communication between the hospital and the camp.

It also added:

During the exercises, the transport capabilities of the American unit were tested, and soldiers and medics exchanged experiences.