I piloted the E-3 Sentry during the period 1980-83 and can assure you there are no thrust-reversers on the real jet . We control runway length with pre-planning, plus we have large brakes and tires (due to our foot-print) and we have have inflight refueling to control fuel weight, making runway length not an issue.  Attached is a copy of the cockpit, showing no thrust-reverse levers on the throttles.

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