NASA is part of the government system. Whatever is the official policy also applies to NASA and has to be carried out in that fashion. If, for example, the official line is not to comment on certain topics related to UFO sightings, or if some of these sightings involve National Security, then NASA will obviously follow that doctrine. Indeed, in this case, you cannot unconditionally trust NASA. — Dr. Peter Creola — Retired Swiss Chief Delegate at the European Space Agency (ESA) and Head of the Swiss Office for Space Policies