Occasionally, when things got really bad, she would strike back. Rather than demand the usual soft, quiet landings for our entrechats and jumps, Miss Boris — with glee in her eye — authorized revenge on the military. "Land hard," she would say. "Let them have it." And 50 strong young bodies would leap and leap with the resilience of pogo sticks, pounding our feet on the wooden floor until the rickety old building thundered and a stunned silence echoed in the room below.