Yes. One whose first big hit, The Hunt for Red October, established him as an author who did meticulous research.

Debt of Honor - which many cited on 9/11 as presaging the attacks - was published in 1994.

I haven't read any of his books since 9/11, but am going to take a look now at what he's published since then.

He lives in Maryland and so is in proximity to a lot of military experts and intelligence analysts.