a comprehensive review of ballistic missile defense policy and programs. The review's findings related to Europe were announced on 17 September 2009. The Ballistic Missile Defense Review (BMDR) Report was published in February 2010. NATO missile defense system Mechanisms The Conference of National Armaments Directors (CNAD) is the senior NATO committee which acts as the tasking authority for the theater missile defense program. The ALTBMD Program Management Organization, which comprises a steering committee and a program office hosted by the NATO C3 Agency, directs the program and reports to the CNAD. The focal point for consultation on full-scale missile defense is the Reinforced Executive Working Group. The CNAD is responsible for conducting technical studies and reporting the outcome to the Group. The NRC Ad hoc Working Group on TMD is the steering body for NATO-Russia cooperation on theater missile defense. In September 2018, a consortium of 23 NATO nations met to collaborate on the Nimble Titan 18 integrated air and missile defense (IAMD) campaign of experimentation. Missile defense By early 2010, NATO will have an initial capability to protect Alliance forces against missile threats and is examining options for protecting territory and populations. This is in response to the proliferation of weapons of mass destruction and their delivery systems, including missiles of all ranges. NATO is conducting three missile defense–related activities: Active Layered Theater Ballistic Missile Defense System capability Active Layered Theater Ballistic Missile Defense System is "ALTBMD" for short. As of early 2010, the Alliance has an interim capability to protect troops in a specific area against short-range and medium-range ballistic missiles (up to 3,000 kilometers). The end system consist of a multi-layered system of systems, comprising low- and high-altitude defenses (also called lower- and upper-layer defenses), including Battle Management Command, Control, Communications and Intelligence (BMC3I), early warning sensors, radar, and various interceptors. NATO member countries provide the sensors and weapon systems, while NATO has developed the BMC3I segment and facilitate the integration of all these elements. Missile Defense for the protection of NATO territory A Missile Defense Feasibility Study was launched after NATO's 2002 Prague summit. The NATO Consultation, Command and Control Agency (NC3A) and NATO's Conference of National Armaments Directors (CNAD) were also involved in negotiations. The study concluded that missile defense is technically feasible, and it provided a technical basis for ongoing political and military discussions regarding the desirability of a NATO missile defense system. During