Recent secret tape recordings seem to suggest that they were. The information was gathered from JFK’s secret recordings inside the oval office. The US has considered China a threat for over 50 years now and this is just more proof of that. The US has a long long History of working on bizarre secret military projects. From the TR3b to the HAARP facility.
TR3B ( does this explain all the sightings of a triangle shaped object with lights on 3 sides and one in the middle?)
Article discussing the Tsunami Bomb and other things.