Russia's Okhotnik Stealth Strike Drone Is Coming The Board of the Russian Military-Industrial Commission announced this week that deliveries of the Sukhoi S-70 Okhotnik-B, a stealth heavy unmanned combat aerial vehicle (UCAV) is on track to enter service in 2024. The Board of the Russian Military-Industrial Commission announced this week that deliveries of the Sukhoi S-70 Okhotnik-B, a stealth heavy unmanned combat aerial vehicle (UCAV) is on track to enter service in 2024. The combat drone is being developed by Sukhoi and the Russian Aircraft Corporation MiG as a sixth-generation aircraft project, and it is based on the earlier Mikoyan Skat, which was designed by MiG.