L armoured tracked refuelling vehicles specially designed to quickly refuel them. They can refuel at sea, using astern fueling rigs. It takes two fully loaded KC-135 tankers to fully refuel an E-4B. The ability to refuel without liquid fuel handling increases safety. Ford tankers refuel planes in airports and some computers use Microsoft software. The craft can refuel by collecting fuel barrels. The fuel supplier would not refuel the aircraft due to outstanding debts. American planes returning to refuel were attacked by Zeros and destroyed. These vessels could refuel many aircraft during the course of the day. Their pilots landed in Chicago to refuel. The KA-3 could also refuel fighters on extended Combat Air Patrol. All services operated via Gander in eastern Canada where the aircraft would refuel. This exercise also saw the first attempts to refuel carriers and battleships at sea. The KC-130Js will refuel its F-18s and augment its fleet of three militarized L-100s. While stopping to refuel, Ally walks Otis.