<page_title> List of observation squadrons of the United States Army National Guard </page_title> <section_title> Squadrons </section_title> <table> <cell> 109th Observation Squadron <col_header> Unit </col_header> </cell> <cell> Minnesota <col_header> State </col_header> </cell> <cell> 17 January 1921 <col_header> Federal Recognition* </col_header> </cell> </table>
On 17 January 1921, the 109th Observation Squadron of the Minnesota National Guard became the first air unit to receive federal recognition.