A quarter of a century has passed since the tragic events of December 21, 1988. But to some, it seems like only yesterday that Pan Am Flight 103 exploded over Lockerbie, Scotland, killing all 259 people on board—including 189 Americans—and 11 Scots on the ground. Above, investigators examine the wreckage from the terrorist attack. For more information, see http://www.fbi.gov/news/news_blog/the-bombing-of-pan-am-flight-103-25-years-later