Home/American Shipper/IAG expands courier service to Houston, Seattle American Shipper IAG expands courier service to Houston, Seattle FreightWaves Staff · Wednesday, June 25, 2014 Facebook Twitter Pinterest LinkedIn IAG said this solution is tailor made for forwarders who need a last-minute booking but don’t want to pay to transport the cargo to the airport. The program started at airports in Atlanta, Chicago, Dallas, London and New York.