On 23 February 2004, the U.S. Army announced that they had decided to terminate all work on the Comanche program. At the time, it was stated that the Army had determined that a number of upgrades would be necessary in order for the RAH-66 to be capable of surviving on the battlefield in the face of current anti-aircraft threats; however, the Army had instead decided to re-direct the bulk of its funding for rotary development toward the renovation of its existing helicopter fleet of attack, utility, and reconnaissance aircraft. Specifically, the Army also had plans to reuse the funds allocated to the Comanche program to speed up development of unmanned aerial vehicles (UAVs), which could also perform the scouting role intended for the vehicle. At the time of its termination, the Comanche program had reportedly spent US$6.9 billion. The contract termination fees involved were estimated to total US$450–680 million for the main program partners Sikorsky and Boeing.