The Air Force Maui Optical and Supercomputing site, or AMOS, Maui Space Surveillance Complex, or MSSC, sits on the summit of Haleakala on the island of Maui, Hawaii. The MSSC, operated under the 15th Space Surveillance Squadron, hosts several Department of the Air Force space domain awareness, or SDA, sensors. The site’s 3.6-meter telescope, seen in the image projecting a sodium guidestar beam, is the largest optical telescope in the Department of Defense. This telescope and the site’s other smaller telescope systems support the U.S. Space Force’s SDA mission. The AMOS site operates experimental research and development systems under the Air Force Research Laboratory. (U.S. Air Force photo / Dr. Robert Q. Fugate)