 The Norwegian AF has also provided electronic warfare Dassault Falcon 20 aircraft in previous Frisian Flag exercises.A Gates Learjet 36A from Dutch company Skyline Aviation was used to provide hostile 'enemy' jamming during the Frisian Flag 2013.Realistic ground based threats include Surface to Air missiles like the SA-6 'Gainful' and Roland mobile short-range surface-to-air missile (SAM) system and 'Smokey Sam' missiles that are fired at aircraft to simulate hostile enemy threat environment.