A lot of freighters come out of Everett these days.  All 747s are now freighters as are the 767s.  The 777 passenger variants are a regular feature but there is quite a demand for 777Fs too.  I saw one go to DHL not long ago.  They have some aircraft already in service but they are in a hybrid scheme.  This was the first one to be delivered in the full DHL yellow colors.  It taxied out and went to the other end of the field for a northerly departure which meant we got a good view of it airborne.  The short delivery flight across the US meant it was rather light so it got airborne quickly and was a long way up by the time it got to us again!