.htaccess Add expire headers

<IfModule mod_expires.c>
    ExpiresActive on
    ExpiresDefault "access plus 1 month"
    ExpiresByType image/gif "access plus 1 month"
    ExpiresByType image/png "access plus 1 month"
    ExpiresByType image/jpg "access plus 1 month"
    ExpiresByType image/jpeg "access plus 1 month"
    ExpiresByType text/html "access plus 3 days"
    ExpiresByType text/xml "access plus 1 seconds"
    ExpiresByType text/plain "access plus 1 seconds"
    ExpiresByType application/xml "access plus 1 seconds"
    ExpiresByType application/rss+xml "access plus 1 seconds"
    ExpiresByType application/json "access plus 1 seconds"
    ExpiresByType text/css "access plus 1 week"
    ExpiresByType text/javascript "access plus 1 week"
    ExpiresByType application/javascript "access plus 1 week"
    ExpiresByType application/x-javascript "access plus 1 week"
    ExpiresByType image/x-ico "access plus 1 year"
    ExpiresByType image/x-icon "access plus 1 year"
    ExpiresByType application/pdf "access plus 1 month"
  <IfModule mod_headers.c>
       Header unset ETag
       Header unset Pragma
       Header unset Last-Modified
       Header append Cache-Control "public, no-transform, must-revalidate"
       Header set Last-modified "Tue, 1 Oct 2014 10:10:10 GMT"
  </IfModule>
</IfModule>