Deaf climbers with an artificial leg, and a person with epilepsy. Only two of the individuals in the group did not reach the summit. Heidi Zimmer is the first deaf woman to reach the summit of Mt. McKinley in Alaska. She is the first deaf individual to reach the summit of Mt. Kilimanjaro in Africa, as well as Mt. Elbrus in the Republic of Russia which has an elevation of 18,510 feet. She has a goal of completing the seven summits which consist of the highest peak in each continent. This is considered a huge accomplishment in the climbing world. Yasayuki Okobu,
S-300 missile system can engage targets out to and up to altitudes of around . In both cases the warhead is around . Radar modes are different and it requires the use of all methods of jamming, while S-300V system works completely passive mode. While it was created from the same project, hence the common S-300 designation, different priorities resulted in a design quite different from the other versions. The S-300V system is carried on tracked MT-T transporters, which gives it better cross-country mobility than even the S-300Ps on 8 × 8 wheeled transporters. It is also somewhat more distributed than the S-300P's.