 Military variants of the helicopter have also been produced under various designations, such as "H145M" or "UH-72", and have been used for training, logistics, medical evacuation, reconnaissance, light attack, and troop-transport operations.The EC145 was a joint development between Eurocopter and Kawasaki Heavy Industries on the basis of their successful prior jointly produced BK 117 C1.Rather than pursuing an entirely clean sheet design, the forward cockpit and modern avionics of Eurocopter's EC 135 were adopted in combination with the proven BK 117's rear section; Flight International described the new helicopter, originally designed as BK 117 C2, as being "90% a combination of these two aircraft [The EC135 and BK 117 C1]".