JAKARTA, Nov. 16 (Xinhua) -- Police will not prohibit people from staging rallies in connection with U.S. President George W. Bush's visit to Bogor, south of capital of Indonesia Jakarta, on Nov. 20 but act firmly if demonstrators break the law, Bogor city police chief Adjunct Senior Commissioner Nurwindianto said on Thursday.

    "So long as they don't break the law, they can go ahead. But if they break the law, we will take firm action," Antara news agency quoted Nurwindianto as saying.

    The police would take resolute action against any party trying to make bombing threats ahead of President Bush's arrival, he added.

    People from various quarters have been staging anti-Bush demonstrations in Bogor over the past few days or ahead of the U.S. leader's arrival in the city.

    President Bush is scheduled to meet President Susilo Bambang Yudhoyono at the Bogor presidential palace during a six-hour visit in Indonesia on Nov. 20.

    Meanwhile, two U.S. Black Hawk helicopters arrived at Halim Perdanakusumah airbase here on Thursday to support security for President Bush who is expected to arrive here on Nov. 20.

    The Sikorsky helicopters of the U.S. Air Force would conduct test flight along the route to be taken by President Bush when he flew from Halim Perdanakusuma to Bogor where he would meet with Indonesian President Susilo Bambang Yudhoyono, the operations chief of the Halim Perdanakusuma airbase, Col Gutomo said .

    According local reports, a carrier of the U.S. Seventh Fleet based in Sasebo, Japan, the USS Essex, four Stealths and a AWACS plane would also take part in guarding the U.S. president during his visit to the country.

    In a separate occasion, the chief spokesman of the Indonesian Defense Forces' (TNI) Headquarters, Rear Admiral Mohammad Sunarto said that the TNI would take any risk with regard to secure President Bush's six-hour visit to the country.