Slow* Not necessarily. The SR-71's range was 3250 miles, which is ~10% less than the NYC to LHR distance. It might encroach bingo fuel, but maybe not. If they

Slow* Not necessarily. The SR-71's range was 3250 miles, which is ~10% less than the NYC to LHR distance. It might encroach bingo fuel, but maybe not. If they refilled to completely full in New York, they could either refill or land once reaching the London area.