grant awards for this grant slug query
$tax_query = array( array( 'taxonomy' => 'aftsa_grant_awards', 'terms' => 'spaceflight', 'field' => 'slug', ), );
$tax_query = array( array( 'taxonomy' => 'aftsa_grant_awards', 'terms' => 'spaceflight', 'field' => 'slug', ), );