While the Fencer is an aged design that can trace its inception to the 1960s, Russia’s remaining fleet of Su-24s has been heavily upgraded with modern systems. The current version of the Fencer is equipped with GLONASS satellite navigation systems, an upgraded glass cockpit, a modern head-up display and an upgraded air-to-air self-defense capability with the addition of R-73 high off-boresight missiles. The jet has also been provisioned to carry a wider range of precision-guided munitions. The Fencer can carry a maximum of 17,600lbs of ordnance. The aircraft, which was designed to penetrate enemy airspace at low altitude, can hit targets as far as 400 miles away without aerial refueling while carrying six 1,100lbs FAB-500M-62 bombs (the plane does has aerial refueling capability).