FILE - In this February 1972 file photo, a building burns in the bogside district of Londonderry, Northern Ireland, in the aftermath of Bloody Sunday. Thirteen people were shot dead on Jan. 30, 1972 in Londonderry when British paratroopers opened fire on a civil rights protest. On Tuesday, Nov. 10, 2015, police in Northern Ireland arrested a 66-year-old former soldier in connection with the killings — the first such detention since the start of a murder investigation three years ago. (AP Photo/Michel Laurent, File)