Yes, this is how old this plane is, and even if production for it ended in 1965, some of the 800 units made are still in service. Like the one we have here, captured in this amazing still (click photo to enlarge) at the Naval Air Station Key West in Florida.
The plane, assigned to the Wisconsin Air National Guard 128th Air Refueling Wing, is on the tarmac after having refueled a number of F-22 Raptors flying with the 325th Fighter Wing during the jets’ dissimilar air combat training over Florida.
With a gross weight of 297,000 pounds (134,717 kg), the KC-135 can carry fuel for enough planes to have airborne reserves: 200,000 lb (90,718 kg). The four turbofan engines that power it can take the tanker to speeds of up to 580 mph (933 kph), and it can keep flying for 1,500 miles (2,414 km).
The KC-135 Stratotanker is no stranger to military operations. During the Vietnam war, it flew 813,000 times on refueling missions, while during the Persian Gulf War the nameplate did the same 18,700 times.
Not all KC-135s have been made for carrying fuel, though. Of the 800 or so made, 88 were modified versions meant for hauling some other cargo, or act as reconnaissance airplanes or command posts.
The ones that are still flying now feature re-skinned wings and better engines that allow "two re-engined KC-135Rs do the work of three KC-135As."