user: Question: What is the air force cross when you recieve the Aerial Achievement Medal?
Columns: ['Medal of Honor', 'Coast Guard Cross', 'Navy Cross', 'Distinguished Service Cross', 'Air Force Cross', 'Homeland Security Distinguished Service Medal']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Transportation Distinguished Service Medal', 'Defense Distinguished Service Medal', 'Coast Guard Distinguished Service Medal', 'Navy Distinguished Service Medal', 'Army Distinguished Service Medal', 'Air Force Distinguished Service Medal']
SQL:

assistant: SELECT "Air Force Cross" FROM "Table" WHERE "Homeland Security Distinguished Service Medal" = 'Aerial Achievement Medal';