Krzesiny Military Air Base (ICAO: EPKS) is a Polish Air Force installation located in the southeastern part of Poznań, Poland. It serves as one of the most operationally significant military airfields in the country, hosting front-line combat aircraft and supporting NATO air defense commitments. The base is home to the 31st Air Base (31. Baza Lotnictwa Taktycznego), which operates the F-16C/D Fighting Falcon — Poland's primary multirole combat aircraft acquired in the early 2000s. Krzesiny plays a central role in Poland's contribution to NATO's Baltic Air Policing missions and collective defense arrangements. The airfield is a restricted military installation with no civilian commercial operations. It occasionally participates in public air shows and NATO exercises, drawing significant attention from aviation enthusiasts and defense observers.