This module focuses on the National Airspace System (NAS) and how weather affects it. It describes the various components of the Federal Aviation Administration (FAA), how that organization manages air traffic, and how CWSU and WFO forecasts help the FAA's decision-making process. The module also provides tips on establishing a good professional relationship with this important partner (FAA), understanding their language, and preparing weather briefings that will give them the information they need. This module is part of a larger exercise to develop a station Weather Impacts Playbook, a supplement to the Station Duty Manual.