Caribou Air Force Station
Caribou Air Force Station was the first of five, United States Air Force, Air Material Command (AMC) installations that were constructed during the period of 1951 – 1953. Each of the five installations was built specifically to provide operational storage of the nuclear stockpile, and to provide a specified number of weapons to their adjacent Strategic Air Command (SAC) bases. The first four installations were built and occupied by 1953. The fifth installation, although completed in 1953, would not be utilized until 1955. The first installation, code named “Site Easy” was originally known as the “North River Depot”. It was constructed between 1951-1952, and operations began in 1952. Funds were provided in 1951 to the Armed Forces Special Weapons Project (AFSWP), for the planning and construction of an ordnance storage site in the vicinity of a new Strategic Air Command Base. The AFSWP was directed to utilize the services of the Corps of Engineers, Department of Army, for planning and construction, and was made responsible for monitoring such work, and for operational security measures during these phases. The original directive to the AFSWP stipulated that upon completion of construction the installation would be turned over to Headquarters, Air Material Command for operational responsibilities.
Cape Field at Fort Glenn
Along with new airfields on the mainland and Southwest Alaska, new air bases were planned for the air defense of the Aleutians to Dutch Harbor. Construction of the new bases on Umnak and Cold Bay began in January 1942 in secret, with construction reportedly disguised as a cannery. The first United States Army engineers landed at what would become Fort Glenn Army Air Base on 17 January and construction began by the end of the month. A Naval airfield, Otter Point Naval Air Facility was adjacent to the Army Airbase. The 807th Engineering Battalion (Aviation) was brought in from Yukat to perform the construction along with a detachment of the Navy Seabee 8th Construction Battalion.
Plans called for three hard-surfaced runways (four were eventually built), however time was of the essence in the construction of the base, as the air defense of Dutch Harbor was dependent on them. Instead of a hard surface, engineers chose to use a new material, Pierced Steel Planking (PSP), which could be laid down quickly over a compressed gravel subsurface to provide the airfield with an all-weather capability. There were 80,000 pieces of matting which needed to be barged to the island. Construction crews worked in three shifts, 24 hours a day laying down the runways and constructing a rudimentary support station, water and sewer lines, an electrical grid, communications, fuel and munitions storage sites and all the other necessities to convert a remote island site into an operational airfield capable of supporting heavy bombers. A 5,000' PSP runway was completed on 5 April although a C-53 was first plane to land on the field was on 31 March. The main runway was officially opened on 23 May. Fort Glenn's first runway was then the U.S. Army's most westerly airfield in the Aleutian Islands."