"San strategy is the 4th layer of the integrated multi-layer anti-aircraft and rocket defence system. It completes what we deficiency in medium-range systems of the Vistula, short-range Narew and very short-range Pilica," said Deputy Head of the Armed Forces Agency, a typical of the Defence Minister for the construction of an integrated anti-aircraft and rocket defence system. Brig-Gen Michał Marciniak.