25 Leopard 2PL, 2 Leopard 2NJ), 232 PT-91 tanks, that underwent modernization in 2016, and 328 T-72 tanks. 230 of the T-72s are being upgraded by the Bumar-Labedy arms manufacturing plant. Improvements include: installation of new radio communication systems, digital engine control and start-up system, 3rd generation thermal imaging cameras, external transport baskets, and any necessary overhauls and repairs that can improve their longevity and combat ability on the modern battlefield. Following Russia's invasion of Ukraine in February 2022, Poland has donated over 200 T-72 tanks to Ukraine's army, along with dozens of other armored vehicles. As a result of the invasion, the Polish government has expedited the process of modernization of the military equipment. In July 2022, Poland signed a contract to acquire 1000 K2 Black Panther tanks and 460 K9 Thunder howitzers from South Korea for (the cost for the later was US$2.4 billion). The first batch of K2 tanks and K9 howitzers was delivered in December 2022. Further deliveries are scheduled for 2023-2026 period. Looking towards the future, the 'Wilk' procurement program envisions the acquisition of up to 500 new tanks. Some of the T-72s and PT-91s will be replaced by M1A2 Abrams SEPv3 main battle tanks (separate from the Wilk program) after Poland signed a contract to purchase 250 Abrams M1A2 SEPv3 tanks (plus ammunition, spare parts, training, and logistical vehicles) on April 6, 2022. For air and missile defense, acquisitions of Poprad Anti-Air missile systems - which covers very short range air defense (VSHORAD) - are in their final stages. Legacy systems will be replaced through the Wisla and Narew procurement programs. The Wisla program will procure medium range air defense platforms and is being fulfilled through the acquisition of 2 Patriot air and missile defense batteries integrated with IBCS (delivery scheduled for late 2022), with plans to order six further batteries. The Narew program covers short range air defense (SHORAD) and is in its final stages of design selection and contract assignment. Considerable involvement of Polish defense contractors is being planned. After the invasion of Ukraine, Poland ordered 1 battery of the Common Anti-Air Modular Missile (CAMM) short-range air defense system from the UK as a short-term stop-gap, with plans to eventually acquire 23 batteries for the NAREW program. The Polish army has 863 new KTO Rosomak multi-role wheeled armored personnel carriers. They will be combined with new BWP Borsuk infantry fighting vehicle. The