A C-17 approaches the business end of a KC-135 tanker over Southern California (or possibly Arizona). The thing hanging down in the foreground is the "boom," which will pump jet fuel into a recepticle centered above the cockpit windscreen on the C-17 (note the black markings at which the tanker's boom operator will take aim). In the KC-135 tanker, a man is lying on his belly looking out of a rear-facing window and controlling something like a joystick to move and extend the boom, and control the flow of fuel between the two aircraft. There is a little space on either side of the boom operator, and to get this shot from this angle, I had to straddle the boomer's left shoulder. The KC-135 was an Air Force Reserve aircraft from March AFB, California, near Riverside. Not sure about the C-17.