The Czech Military Technical Institute (VTU) and the LOM Praha aircraft repairer, both state enterprises, will take part in the planned contract for a US helicopters supply, military and defence ministry officials told a lower house Defence Committee meeting today. The contract for the Bell company's H-1 system, consisting of four AH-1Z Viper combat helicopters and eight UH-1Y Venom multipurpose helicopters, will cost 14.5 billion crowns (17.6 billion including VAT).