Not really correct, the box was stolen and swapped with junk. The russians are only just now testing how much the ray dilutes from outer space, these were known as the cuban sonic attacks. The ray itself is too powerful to ever be tested outside a laboratory environment, the damage it causes to soft tissue even across solid metal barriers is awful. It works in the same way glass can be broken with sound, but it is not air based. It’s almost like he found the equivalent to “the fundamental frequency” to the fabric of spacetime itself, by using a violent harmonic combination of electromagnetic frequencies. It’s still unknown how it works or if it has any form of “echo” that could cause proximity damage over time. This probably works by vibrating the extra dimensional space string theory postulates space time is made from, at the equivalent of different geometric angles. Hopefully such technology is never independently rediscovered.