While Alaska Air Cargo has been struggling to add its new 737-800BCFs to the fleet, the -7000 freighters have continued to provide service to them.  I have shot these a few different times, but I got some more recent shots of one of the jets at a time when the sun angle was such that the surface of the fuselage was illuminated in such a way to show up the textures of the construction.  The conversion to freighter involves a lot of reinforcement around the aperture for the freight door.  The light really highlighted this reinforcement well.