FILE -- In this Wednesday, Jan. 15, 1997 file photo, Britain's Princess Diana tours a minefield dressed in a flak jacket and face shield in Huambo, central Angola. The Princess was visiting Angola for the Red Cross, to see for herself the carnage mines can cause. Princess Diana would have been 50 years old on Friday, July 1, 2011, perhaps the only certainty about the course of a life abruptly cut short in a 1997 car crash in Paris, with a new boyfriend, two months past her 36th birthday. (AP Photo/John Stillwell, file)