text: Could be investigative grand jury in Mr. Caldwell's future.  Possible misuse of federal money will bring regulators and investigators out. Inquiring minds like to know.  A rail from nowhere to nowhere will certainly raise eyebrows. The rail may stop at Middle Street, Honolulu, Hawaii but the investigation will begin in Washington D.C. and end at the Federal Court on Ala Moana Blvd. There will be more questions than answers. And that is never a good thing.   There will be statements under oath, investigative grand juries and at minimum serious criticism. Some are saying that Mufi, Caldwell and Grabauskas should be ashamed.  I fear that it will go beyond shame.  It may go to culpability and blame.  Money trail is hard to hide.  Forensic audit will reveal the questions that no one had the courage to ask.  Where's the money?