CONINGSBY, ENGLAND - JULY 11: Prince William, Duke of Cambridge talks to veterans during a visit to The Battle Of Britain Memorial Flight to mark it's 60th anniversary at RAF Coningsby on July 11, 2017 in Coningsby, England. (Photo by Darren Staples - WPA Pool/Getty Images)
CONINGSBY, ENGLAND - JULY 11: Prince William, Duke of Cambridge reacts as he talks to veterans during a visit to The Battle Of Britain Memorial Flight to mark it's 60th anniversary at RAF Coningsby on July 11, 2017 in Coningsby, England. (Photo by Darren Staples - WPA Pool/Getty Images)
CONINGSBY, ENGLAND - JULY 11: Prince William, Duke of Cambridge talks to veterans during a visit to The Battle Of Britain Memorial Flight to mark it's 60th anniversary at RAF Coningsby on July 11, 2017 in Coningsby, England. (Photo by Darren Staples - WPA Pool/Getty Images)
CONINGSBY, ENGLAND - JULY 11: Prince William, Duke of Cambridge talks to veteran George 'Johnny' Johnson during a visit to The Battle Of Britain Memorial Flight to mark it's 60th anniversary at RAF Coningsby on July 11, 2017 in Coningsby, England. (Photo by Darren Staples - WPA Pool/Getty Images)
