Russian President Dmitry Medvedev ordered a full audit of the entire $2 billion program and an investigation into the failure. Following the mishap, Roscosmos activated two reserve satellites and decided to make the first GLONASS-K satellite, to be launched in February 2011, part of the operational constellation instead of mainly for testing as was originally planned. This would bring the total number of satellites to 23, obtaining almost complete worldwide coverage. The second GLONASS-K would be ready within three to four months. The third generation GLONASS-K satellites have an operational lifetime of 10 years, compared to the 7-year lifetime of the second generation GLONASS-M, and to the 3-year lifetime of the original GLONASS satellite. The mass of the new satellite is just 750 kg, compared to 1,450 kg of GLONASS-M. This means that two can be orbited at time on a Soyuz-2.1b rocket, or six at a time on Proton-M. In contrast, only three GLONASS-M satellites can be launched on Proton-M at a time. The new satellite design is expected to double the accuracy of the GLONASS system. On a May 28, 2014 interview, Nikolay Testoyedov — president of ISS Reshetnev — stated that production of GLONASS-M would end in 2015, with GLONASS-K being exclusively produced after that final batch. In an December 14, 2014 interview with GPS World, he stated that while the original idea was to have just two GLONASS-K1 prototypes to be followed by the GLONASS-K2 production, the Western sanctions limited the supply of radiation resistant electronics. And thus, they had decided to launch an additional nine GLONASS-K1 as fleet replacement while they finished the GLONASS-K2 design. On 11 May 2015, Leonid Gusev, one of the main designers of the GLONASS system and the COSPAS-SARSAT, died at the age of 92 years. In a May, 2015 presentation, Mr. Testoyedov expected the last GLONASS-M to fly in late 2017, with serial production of GLONASS-K1 to start flying in early 2018, just after the launch of the first GLONASS-K2 prototype. The presentation showed at least eleven additional GLONASS-K1 satellites flying until 2020. On July 30, 2015, ISS Reshtev announced that it had completed the last GLONASS-M (N° 61) spacecraft and it was putting it in storage waiting for launch, along an additional eight already built satellites.