They were talking about things like hypersonics, boost glide vehicles, exo atmospheric aircraft and narrow and broad beam directed energy devices for comms and power transmission.
These are things that the US military have been openly working on the development of for decades. So have the Russians and the Chinese. The Russians actually demonstrated a very capable system in the Ukraine last fall.
The US military has gotten really, really good reducing targets to atoms but it's going to be a long time before we are able to put them back together again.
I’m thinking that with the revelation of an “SR-72”, that we may have something even more advanced as a “hole card”.
Maybe wishful thinking, but it’s fun to imagine!