loaded onto the missile. When the missile is in flight it compares the stored map data with radar altimeter data collected as the missile overflies the map. Based on comparison results the missile's inertial navigation system is updated and the missile corrects its course. TERCOM was based on, and was a significant improvement on, "Fingerprint," a technology developed in 1964 for the SLAM. DSMAC – Digital Scene Matching Area Correlation. A digitized image of an area is mapped and then inserted into a TLAM mission. During the flight the missile will verify that the images that it has stored correlates with the image it sees below itself. Based on comparison results the missile's inertial navigation system is updated and the missile corrects its course. Operational history United States Air Force The Air Force is a former operator of the nuclear-armed version of the Tomahawk, the BGM-109G Gryphon. Army In November 2020, the U.S. Army selected the Tomahawk to fulfill its Mid-Range Capability (MRC), giving it a land-based long-range missile capable of striking ground and sea targets. The Army plans to use the Tomahawk alongside a ground-based SM-6 and field them by late 2023. Navy In the 1991 Gulf War, 288 Tomahawks were launched, 12 from submarines and 276 from surface ships. The first salvo was fired by the destroyer on January 17, 1991. The attack submarines and followed. On 17 January 1993, 46 Tomahawks were fired at the Zafraniyah Nuclear Fabrication Facility outside Baghdad, in response to Iraq's refusal to cooperate with UN disarmament inspectors. One missile crashed into the side of the Al Rasheed Hotel, killing two civilians. On 26 June 1993, 23 Tomahawks were fired at the Iraqi Intelligence Service's command and control center. On 10 September 1995, launched 13 Tomahawk missiles from the central Adriatic Sea against a key air defense radio relay tower in Bosnian Serb territory during Operation Deliberate Force. On 3 September 1996, 44 ship-launched UGM-109 and B-52-launched AGM-86 cruise missiles were fired at air defense targets in southern Iraq. On 20 August 1998, 79 Tomahawk missiles were fired simultaneously at two targets in Afghanistan and Sudan in retaliation for the bombings of American embassies by Al-Qaeda. On 16 December 1998, 325 Tomahawk missiles were fired at key Iraqi targets during Operation Desert Fox. In early 1999, 218 Tomahawk missiles were fired by U.S. ships and a British submarine during the 1999 NATO bombing