Clancy was either trying to warn us or he was an instrument of predictive programming.

For instance, consider the plot of his 1998 novel Rainbow Six:

Big Pharma colludes with WEF type global elites to apply gain-of-function enhancements to ebola and make it into a super virus called Shiva. They intend to release Shiva at the Olympic games so the attendees will carry the virus back to their home countries around the globe. Once the pandemic is climaxing and kills half the world, the same pharma companies plan to release a "vaccine" that is actually a delayed-release version of Shiva, which would kill off the rest of the humans on earth. The globalists had already bought up huge tracts of farmland in Kansas where they would live in a compound and wait for the global population to die off. A former Russian KGB agent who unknowingly helped perpetuate the plan learns that his globalist employers are a bunch of Earth worshipping "druids" who intend to genocide the entire population of the planet.

I won't spoil the rest in case you want to read it, but the novel was 100% prophetic 22 years before covid.