Final answer:
The base nomenclature 'GMT' refers to the Giant Magellan Telescope, not a missile transporter, and is a major astronomical project with seven large mirrors, located in the Atacama Desert.
Step-by-step explanation:
The base nomenclature for the Guided Missile Transporter (GMT) appears to be a mix-up with the Giant Magellan Telescope (GMT), which is an extremely large telescope project with significant contributions from U.S. astronomers. Rather than transporting missiles, the GMT is designed for astronomical observations and consists of seven 8.4-meter mirrors to create a single optical surface.
The construction of this scientific wonder has commenced near the Las Campanas Observatory at the edge of the Atacama Desert, which is one of the best places in the world for astronomical observations due to its high altitude and low light pollution.