distinctive colors for some units or functions. The beret colors are as follows: Modernization program The Venezuelan government has embarked on a massive military purchase programme. This has included negotiations for German submarines and transport aircraft, several agreements with Russia (outlined below), transport aircraft and naval vessels from Spain, radars from China, home-made and designed armored light vehicles and rocket launchers, studies for Russian main battle tanks and infantry fighting vehicles, amongst many others. Most if not all European military hardware have not been delivered to Venezuela due to the U.S. embargo. Surveillance radars, AK-103s and helicopters: Mi-17, Mi-26 and Mi-35 Venezuela in 2005 acquired 3 JYL-1 long range 3D surveillance radars from China at a cost of $150 million. The 3 JYL-1s, which are truck mounted, were all delivered by 2007. Also that year, Venezuela bought 51 military helicopters from Russia, by 2008 all 51 had been delivered to the Venezuelan armed forces, the helicopters acquired were: 40 Mi-17, 3 Mi-26 and 8 Mi-35. Then in 2006 the country purchased 100,000 Russian AK-103 assault rifles, all delivered in that same year. Chávez also claimed to have acquired a license to manufacture Kalashnikovs in Venezuela, Su-30s and missiles In 2006 Venezuela purchased 24 Su-30MK jet fighters also from Russia, all delivered by 2008. In order to equip those fighters the country bought a large assortment of missiles, it is estimated that Venezuela acquired: 200 laser-guided bombs types KAB-500 and KAB-1500, 50 Kh-29 air-to-surface missiles, 50 Kh-31A1 anti-ship missiles, 50 Kh-59ME TV-guided cruise missiles, 100 Vympel R-27 medium-range air-to-air missiles and 150 Vympel R-73 short-range air-to-air missiles. Night vision equipment, sniper rifles and submarines In 2007, the Belarusian military optics industry agreed to supply the Venezuelan army with night vision devices, and install on, as Hugo Chávez described, "every single rifle in the Venezuelan army." The deal is valued at $3–$24 million. Later that year, Chávez announced plans to purchase of 5,000 Dragunov sniper rifles from the Russian Rosoboronexport, adding that Venezuela must ready itself for a "possible U.S. invasion." It is not clear whether that deal was completed. In all, from 2005 to 2007 Venezuela purchased more than $4.4 billion in weapons from Russia. After signing an "initial contract", Venezuela was expected in June 2007 to finalize the acquisition of five diesel Project 636 Kilo class submarines, and at a later date finalize the acquisition of four diesel Project 677