18 U.S.C. § 1361 : US Code - Section 1361: Government property or contracts

      Whoever willfully injures or commits any depredation against any
    property of the United States, or of any department or agency
    thereof, or any property which has been or is being manufactured or
    constructed for the United States, or any department or agency
    thereof, or attempts to commit any of the foregoing offenses, shall
    be punished as follows:
      If the damage or attempted damage to such property exceeds the
    sum of $1,000, by a fine under this title or imprisonment for not
    more than ten years, or both; if the damage or attempted damage to
    such property does not exceed the sum of $1,000, by a fine under
    this title or by imprisonment for not more than one year, or both.