The Serbian Army conducted exercises using 155-mm self-propelled howitzers B52 M15 "Nora". The self-propelled howitzer B52, developed by the Military Technical Institute and produced by Yugoimport SDPR in Velika Plana since 2006. The self-propelled howitzer Nora-B52 can be equipped with various chassis, including from Kamaz 63501 trucks. The self-propelled howitzer has been modernized many times, it is armored and equipped with a 12.7 mm machine gun and a twin M55 cannon of 20 mm caliber. The howitzer is equipped with a 155-mm cannon with a barrel length of 52 calibers. The B52 M15 "Nora" is equipped with an automatic loader consisting of two drums, one containing 12 shells, the other 12 propellant charges. Ammunition up to 36 shells. The howitzer is equipped with a GPS system and can fire in the "Firestorm" mode. The firing range of the Nora B-52 SPG is up to 41 km. The maximum rate of fire is up to 4 rounds per minute, with continuous firing up to 3 rounds per minute. The B52 SPG weighs up to 36 tons, has anti-mine protection and is serviced by 5 operators. The cruising range of the B52 "Nora" SPG is up to 1000 km at a speed of up to 80 km / h.