The rebels also quickly began to use Soviet-made and US shoulder-launched, man-portable air defense MANPADS missiles such as the Strela and Redeye which had either been captured from the Soviets or their Afghan allies or were supplied from Western sources. Many of them came from stocks that the Israelis had captured during wars with Soviet backed states in the Middle East. Owing to a combination of the limited capabilities of these early types of missiles, poor training and poor material condition of the missiles, they were not particularly effective. Instead, the RPG-7, originally developed as an antitank weapon, was the first effective countermeasure to the Hind. The RPG-7, not designed for air defense, had several inherent shortcomings in this role. Since the RPG-7 is unguided, pilots could successfully evade if they became aware of the projectile. Additionally, when fired at the angles needed to hit aerial targets, the backblast could easily wound the shooter, and the inevitable cloud of smoke and dust made it easy for gunners to spot the shooter's position.