2 was developed in the 2000s and became operational in 2006, while a third generation, NASAMS 3, was developed in the 2010s and fielded in 2019. First generation NASAMS The system integrates US-built TPQ-36A air defense X band 3D radar and AMRAAM missiles with a Norwegian developed battle management C4I (command, control, communication, computers and intelligence) system called FDC, short for Fire Distribution Center. The FDC connected to a radar forms an "Acquisition Radar and Control System" (ARCS). NASAMS capabilities are enhanced by the system's networked and distributed nature. The shelter module hosts two identical consoles for the Tactical Control Officer (TCO) and the Tactical Control Assistant (TCA). The AMRAAM missile is fired from a towed launcher with six missile canisters. The standard AMRAAM missile has a horizontal range of up to 25 km. Other sources cite a range of "over 15 km" and 40 km for the extended range version. By the late 1990s, RNoAF formed an integrated ground-based air defense system known as the Norwegian Solution (NORSOL), by connecting NASAMS battle management ARCS stations with two other air defense systems via field wires and radio. Subordinate weapon systems included the RBS 70 laser beam assisted MANPADS system and the Bofors 40mm L70 gun (controlled by the Oerlikon Contraves FCS2000 monopulse doppler tracking radar). The solution integrated all three systems (NASAMS, RBS70, and L70/FCS200) to provide battlefield awareness to commanders of all echelons, and to ensure protection of friendly aircraft while preventing overkill (i.e. engagement of a single threat by multiple air-defense units) and underkill (failure to engage the threat by any unit). NASAMS 2 The RNoAF together with KDA conducted a mid-life update of NASAMS in the early 2000s, called NASAMS 2, and the upgraded version was first handed over to RNoAF in mid-2006. The major difference between the two versions is the use of standard tactical data links (Link 16, Link 11, JREAP, ATDL-1 etc.), as well as a better ground radar. Full operational capability (FOC) was expected for 2007. A complete NASAMS 2 battery consists of up to four firing units; each firing unit includes 3 missile launchers (LCHR) each carrying six AIM-120 AMRAAM missiles, one AN/MPQ-64F1 Improved Sentinel radar, one Fire Distribution Center vehicle, and one electro-optical camera vehicle (MSP500). The Improved Sentinel radar has a broader frequency spectrum, variable rotation speed, and increased capacity to detect and follow targets. The radar platform comes with