In US, Bell Helicopter has won a US Navy contract to manufacture nine AH-1Z Viper combat helicopters for Pakistan under the foreign military sales program. The US Department of Defense announced yesterday that the Bell AH-1Z Viper is a twin engine attack helicopter based on the previous AH-1W Super Cobra model that
was developed for the United States Marine Corps. The Viper has a top speed of 420 km per hour and a range of 610 kilometers.
In April 2015, the US Department of State approved the possible sale to Pakistan for 15 AH-1Z Vipers with Hellfire missiles and support worth up to 952 million dollars.