including 13.6% of under eighteens and 55.6% of those over 64. Education The only school on the island was in Nikolski, part of the Aleutian Region Schools. The Nikolski School served grades K-12. The school had one teacher who lived in a small home adjacent to the school building. The home is owned by the school district and was purpose-built for teachers and their families. The Nikolski School is in danger of extinction. Schools in rural Alaska must have at least 10 students to retain funding from the state. For the 2009–2010 school year, the Nikolski School had only nine students including a Samoan family who subsequently relocated, and was closed in 2010 Transport Umnak does not have a harbor. It does, however, have an airstrip, Nikolski Airport. Building an airport runway in the hilly terrain was a unique engineering achievement of the Army Engineers, commanded by Colonel Benjamin B. Talley. The construction work of the runway was proposed at Otter Point on the northeastern end of Umnak. Construction was started in the middle of January 1942 and was commissioned by April of the same year, being given the name Fort Glenn. of Marston Matting, a perforated-steel plating (PSP), was assembled along with other steel plates and created a flat surface for aircraft to take off and land. The runway was completed on March 31, 1942, by the 807th Unit of the Army Engineers. It was long with a width of sufficient for Capt. John S. Chennault's P-40 fighter aircraft in the 11th Fighter Squadron to land. The Naval Air Facility Otter Point was built next to Fort Glenn. After the war ended, Fort Glenn remained open as a refueling stop for transient aircraft in the Aleutians along with Military Air Transport Service flights using the Great Circle Route from Japan to the United States. The main runway was extended to 8,300 feet long to accommodate large, long range aircraft. By 1946, the base maintained only a skeleton staff due to the rapid demobilization of the Army Air Forces. The last AAF personnel were withdrawn by 30 September 1947, and the base was put on inactive status and was effectively abandoned. It was decommissioned in 1950 and the site was excessed between 1952–55 to the Bureau of Land Management. Many years later the airfield was added to the National Register of Historic Places as Cape Field at Fort Glenn. Some