Don't know about secrecy too much
. There is quite a lot about NORAD in public domain and on the Internet. And few of us here are devoted to reverse engineering UFO propulsion, so please DO NOT tell us, so not to spoil the plot
There is a webpage somewhere with a Congressional report with a full breakdown of NORAD's capabilities. Basically NORAD can track football size objects, with telescopes and radars, from a geostationary orbit all the way down to one's backyard. So it's only natural that they would be in the loop. Radars followed all the Apollo space program crafts to the Moon and back, so relatively speaking, that's standard issue tech. Just with simple understanding of technology and some cross-referencing of various UFO stories that nobody pays attention to, one can learn that NORAD 1) Tracks UFOs, 2) actively distributes information to allies if UFO is going to land inside their territory, 3) sends teams to monitor and clean up. But, general public would never believe that, anyway.
One interesting thing that comes from the fact that NORAD distributes UFO paths to allies is that means that UFOs actually fly along ballistic paths towards the Earth. That sageways into other research that suggests that UFOs arrive and leave Earth when Moon is in certain position so that Moon's gravity help reduce energy required. I forgot how it works, but basically on arrival UFOs use Moon for braking, and on leaving UFOs use Moon for accelerating them out of Earth's gravity field. It somehow suggests that UFOs are not steerable, kind off, don't have propulsion as such and are just launched in a certain direction and follow inertial paths, more or less like satellites do. Just some observations.