A $2.2 million expedition that hoped to find wreckage from Amelia Earhart’s final flight is on its way back to Hawaii without the conclusive plane images searchers were hoping to attain. But the president of the group leading the search, the International Group for Historic Aircraft Recovery, said it still believes Earhart and her navigator crashed onto a reef off a remote island in the Pacific 75 years ago this month. The president, Pat Thrasher, said Monday that the group has a significant amount of video and sonar data that searchers will pore over on the return voyage to Hawaii this week and afterward to look for things that may be tough to see at first glance....