President George W. Bush greets Artie Muller, national executive director of Rolling Thunder, and singer Nancy Sinatra at the White House in May 2004. Mr. Muller and Miss Sinatra will again be part of the Memorial Day Rolling Thunder tribute to veterans. (Associated Press)

President George W. Bush greets Artie Muller, national executive director of Rolling Thunder, and singer Nancy Sinatra at the White House in May 2004. Mr. Muller and Miss Sinatra will again be part of the Memorial Day Rolling Thunder tribute to veterans. (Associated Press)