Hill believed she was reaching for something , perhaps a piece of the President 's skull .
After the President was shot in the head , Mrs. Kennedy began climbing out onto the back of the limousine , though she later did n't have any recollection of doing so .
Hill believed President was reaching for something , perhaps a piece of the President 's skull .
After the President was shot in the head , Mrs. Kennedy began climbing out onto the back of the limousine , though she later did n't have any recollection of doing so .