On 21 May 2009, Dragan Marić, a former businessman who was revolted over the court decision in his dispute with the national air carrier Jat Airways, entered the Presidency office carrying two hand grenades and seeking an out-of-court settlement signed by President or Government. Members of the Battalion of Military Police Cobras, providing security to the President of Serbia, managed to take one of the grenades immediately and isolate the attacker, however the perpetrator removed the pin from the second grenade and threatened to detonate it by releasing the lever. The negotiations were handled by the special team of the Serbian Ministry of Internal Affairs, supported by the officials of the Ministry of Justice, and lasted for several hours until the man was disarmed and arrested. After the incident, Tadić, who was present in the secured area of the building, congratulated the police and army special units, the security and negotiation team for doing a terrific job, peacefully and with no casualties and also said that problems, no matter what kind, cannot be resolved by force and by jeopardising citizens' lives.