FILE - This December 1988 file photo shows wrecked houses and a deep gash in the ground in the village of Lockerbie, Scotland, that was caused by the crash of Pan Am Flight 103. Families of some of the 270 people who died in the airliner bombing 25 years ago gathered for memorial services Saturday, Dec. 21, 2013, in the United States and Britain, honoring victims of the terror attack that killed dozens of American college students and created instant havoc in the Scottish town where wreckage of the plane rained down. (AP Photo/Martin Cleaver, File)