After 8-year-old Grace Lea KM4TXT/AG replied to a CQ call from ARRL HQ station W1AW the rest of her comprising of Michele N8ZQZ, James WX4TV, Zechariah WX4TVJ, Faith Hannah AE4FH, Hope KM4IPF and Grace KM4TXT family joined in 

Grace KM4TXT/AG, who has recently passed her General exam, heard W1AW calling "CQ" on 20 meters and gave them a shout. The ARRL's Sean Kutzko KX9X jumped on the air to say "hi" and W1AW became the fifth station in the world to Work All Lea on HF!

What is /AG and when is it used - https://hamradioacademy.com/general-using-the-ag-suffix/