# Glossary * A/D: Airdrop * A/R: Air Refueling * AAR: Air Refueling * AFCS: Automatic Flight Control System, autopilot. * BA: Barometric Altimeter * BDHI: Bearing Distance and Heading Indicator * CONFIG: Configuration Display, page on the MFD * CPT: Captain, Pilot * DCLT: Declutter (HUD) * EFB: Electronic Flight Bag, cockpit tablet. * ENG: Engine Display, page on MFD * FO: First Officer, Copilot * IAS: Indicated Air Speed * MFD: Multi-function Display * MSN: Mission, Flightplan as active on FMC * ND: Navigation DIsplay, page on the MFD * PFD: Primary Flight Display, page on the MFD * RA: Radio Altimeter * RDR: Radar * SKE: Stationkeeping * VS: Vertical Speed --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.miltechsimulations.com/miltech-simulations-microsoft-c-17-globemaster-iii/product-details/glossary.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.