 This next launch is the end of an era, as at 22.25 UTC, on September 24th, we witnessed the last ever Delta launch from Vandenberg. Specifically for this flight, NROL 91, it was the beast that is the last of the deltas, the self-firelighting Delta IV Heavy. The host to this magnificent sight was Space Launch Complex 6, and as this was a secret mission from the National Reconnaissance Office, our knowledge of this mission ends there. It is suspected that the payload is Keyhole 11, a satellite which is similar to the Hubble Space Telescope, but instead of looking at pretty stars and galaxies, it looks at the Earth.