There's a new service called "Solve" available at 500 airports world wide and will act as your airport concierge when traveling. They will meet you at the front door, walk you through security and customs, and will get you to your connection in time. It's $290 per visit, or $145 each for two. Johnny says he wouldn't use it for departures, just arrival and transferring. That's where it's worth the money. But Leo says it can add up from airport to airport.
In the US, get Precheck, Global Entry or Clear.