The Thales D-ILS will provide the equivalent of fixed-based Instrument Landing System capability at tactical airfields and environmentally diverse regions such as areas of natural disaster or humanitarian relief efforts. The Thales D-ILS is a COTS system based on the Thales ILS 420 – a fixed-based, dual frequency ILS which is the industry's next generation ILS with more than 700 fixed-base systems chosen worldwide for civil and military applications. The contract being announced includes delivery of two Production Representative Units (PRUs) along with technical orders and provisional technical documentation, training development and conduct, system analysis, architecture and engineering, and contractor support. The USAF plans to purchase up to 38 systems over the coming years.