 
 <prompt> Wetin be di first acronym wey dem mention? Based on di last question, write one context wey get di answer. E fit be 1 - 20 sentences. Context: <response>: ```Larger SAMs fit dey for fixed launchers, but dem fit also dey towed/re-deployed as dem like. The SAMs wey individuals fit launch dey known for United States as Man-Portable Air Defence Systems (MANPADS). MANPADS from former Soviet Union don dey export go different countries, and dem fit dey use by plenty armed forces. Targets for non-ManPAD SAMs fit dey acquired by air-search radar, then dem go dey track am before/during when SAM dey "locked-on" before dem go fire am. If the targets na military aircraft, dem go first identify if e be friend or foe before dem engage am. The latest developments for short-range missiles wey dey relatively cheap don start to replace autocannons for this role.``` 