 A Blackhawk military helicopter of the Colombian Airborne Assault Aviation Division crashed in the Chaco Department on the border with Panama. According to LT Impo, there were seven soldiers on board the helicopter, four were killed. Three soldiers were taken to medical centers in serious condition. According to the agency, on the evening of February 5, the helicopter crew stopped communicating. The National Army of Colombia contacted the Panamanian authorities to find out what happened later. The Army's press service confirmed the helicopter crash. According to the Colombian side, the crew lost control while approaching the helipad, the Sikorsky UH-60 Blackhawk helicopter entered service with the US Army, replacing the Bell UH-1 helicopter. Summer tests of the prototype UH-60 were completed in 1974, and in 1976 the helicopter won a tender for supply to the US Army. By 1985, the US Army had purchased more than 300 UH-60 helicopters. By the mid-1990s, more than 2,600 helicopters had been built. The helicopter is in service with many countries in North and South America, as well as in Europe and Asia.