It is an advanced derivative of Alenia Aeronautica's earlier G.222 (C-27A Spartan in U.S. service), equipped with the engines and various other systems also used on the larger Lockheed Martin C-130J Super Hercules. In addition to the standard transport configuration, specialized variants of the C-27J have been developed for maritime patrol, search and rescue, C3 ISR (command, control, communications, intelligence, surveillance and reconnaissance), fire support and electronic warfare and ground-attack missions. The C-27J has been ordered by the military air units of Australia, Bulgaria, Chad, Italy, Greece, Kenya, Lithuania, Mexico, Morocco, Peru, Romania, Slovakia, and Zambia (on order). In 1995, Alenia and Lockheed Martin began discussions to improve Alenia's G.222 using C-130J's glass cockpit and a more powerful version of the G.222's T64G engine and four-blade propellers. In 1996, a program began on an improved G.222, named C-27J; it used a U.S. military type designation based on the G.222's C-27A designation. In 1997, Alenia and Lockheed Martin formed Lockheed Martin Alenia Tactical Transport Systems (LMATTS) to develop the C-27J. The design changed to use the C-130J Super Hercules's Rolls-Royce AE 2100 engine and six-blade propeller. Other changes include a fully digital MIL-STD-1553 systems and avionics architecture, and an updated cargo compartment for increased commonality. The C-27J has a 35% increase in range and a 15% faster cruise speed than the G.222. In December 2011, the Royal Australian Air Force (RAAF) issued a Foreign Military Sales request for 10 C-27Js valued at US$950m to replace its retired DHC-4 Caribou fleet. Australia had opted for the C-27J over the rival EADS CASA C-295 following an RAAF evaluation, which had noted the C-27J's wider and taller cabin being compatible with the Australian Army's general purpose G-Wagon vehicle, and palletized goods. In December 2013, the first Australian C-27J performed its maiden flight. In December 2014, the RAAF began maintenance training on the type; delivery of the first two of the ten C-27Js on order was also formally accepted that month. For more details about the Spartan, click here.