Moffett Field is located close to a couple of satellite manufacturing locations.  When the time comes to ship the satellites to their launch location, the transport of choice is often the Antonov AN124.  Twice, now, I have caught one of these huge aircraft coming in to pick up a payload.  The most recent one resulted in getting these shots.  The slightly annoying thing is that both times the plane came in in the middle of the day.  This is the worst time for shooting at Moffett because the light is almost directly on the tail of the jet.  Earlier or later would be fine.  Oh well.