September 11 – IX GROM CHALLENGE Held in Czerwony Bór in Podlaskie voivodship, the GROM CHALLENGE event illustrates the selection process to the contemporary special forces of the Polish Army. The event features promotional and exhibition stands of the Special Operations Formation GROM, the Polish Army Museum, and the Territorial Défense Forces. It is addressed to all enthusiasts of contemporary special units of the Polish Army from all over the country. The event will also be accompanied by a static exhibition dedicated to the special operations unit J.W. GROM and the “Cichociemni” Paratroopers of the Polish Home Army.