If you're chasing that same Flynn-style adrenaline rush, I'd steer you toward a few names that keep my heart rate up. Brad Thor's Scot Harvath series is basically the spiritual successor—counter-terrorism, political brinkmanship, the whole shebang. Kyle Mills, who actually took over Flynn's Mitch Rapp series after he passed, has his own stuff too; 'The Patriot Attack' moves like a bullet. Don't sleep on Daniel Silva's Gabriel Allon books either. They're spy thrillers with a bit more art history woven in, but the pacing is relentless once the operation kicks off.
I've found the best hunting ground is often just looking at the 'Customers Also Bought' sections on retailer pages after clicking on a Flynn title. That algorithm gets spookily accurate. Also, a lot of these authors have their first books in a series permanently priced as loss-leaders on Kindle, so you can snag a sample chapter for nothing and see if the tempo works for you before committing. My local library's digital app has been a goldmine for this genre, honestly—no cost, instant access, and if the plot drags, you just return it without a second thought.