According to John Pike, the Titan IV was launched at 21:18 UTC, "due south". The launch azimuth, and a 57 foot payload fairing indicates a KH. The launch occurred 22 minutes before the southbound plane crossing of USA 86 over the pad, so it may be replacing it (rather early!) or augmenting it. So there may be some interesting new observational and analytical challenges next spring. bye for now