 Second, Patriot Battery enters combat duty in Ukraine. Another US-made Patriot surface-to-air missile system has entered combat duty in Ukraine, Ukrainian Air Force Commander Nikolai Oleshuk said. The second battery of Patriot surface-to-air missile system is already on duty. The official wrote on his Telegram channel, posting a photo of a Patriot launcher. Oleshuk said on April 21 that the first Patriot battery is already being used by the pro-Kiev forces. Deputy Defense Minister Alexander Pavliuk said the Kiev government has already received Patriot missile systems from the United States, the Netherlands and Germany. The Patriot system would allow Ukraine to intercept and destroy incoming missiles and protect against enemy aircraft. The highly effective system can identify and eliminate threats from hundreds of miles away. In addition, the Patriot system boasts powerful radar capabilities superior to other air defense systems allowing for easier differentiation between friendly and hostile targets. Moscow has repeatedly warned Washington against transferring such weapons to Ukraine. Before this, Kremlin spokesman Dmitry Peskov said that the Patriots would become a legitimate target of the Russian armed forces if they were supplied to Kiev. The Patriot is a surface-to-air missile system which has been used in the United States since the early 1980s. The Patriot system is manufactured by the Raytheon Corporation and are capable of hitting planes, drones, cruise missiles, shorter and intermediate range missiles. One battery consists of from five to eight mobile units. The platform can hold launch containers for four or sixteen missiles depending on the modification.