The Polish military continues to use mostly Soviet-era equipment, however since joining NATO in 1999, Poland has been upgrading and modernizing its hardware to NATO standards. The General Staff has been reorganized into a NATO-compatible J/G-1 through J/G-6 structure. Recent modernization projects include the acquisition of (48) F-16 fighter jets from the United States, (128) Leopard 2 MBTs from Germany, ATGM technology from Israel (as well as possible future acquisition of Rafael Python 5 missiles), and (690) Patria AMV AFVs from Finland.