Mysterious incident in California as bucket crashes through roof

In San Diego, California a five gallon bucket full of cleaning fluid crashed through the roof of a business causing a giant hole.  Sounds bizzare right?  The mystery was solved when Marines at a nearby base took responsiblity.  They say one of their planes flew over the business, dropping the bucket.   It happened early in the morning so no one was inside the building.  The Marines say they will cover the cost to fix the damage.