considered unproven and risky. Over 3,200 M1 Abrams were produced and first entered US Army service in 1980. About 6,000 upgraded M1A1 Abrams were produced and used a 120 mm smoothbore cannon, improved armor, and a CBRN protection system. Since the Cold War the U.S. has moved away almost completely from using light tanks; instead supplementing these with heavily armed armored cars. The M60A1/(A3 For Army) tank continued in service with the Marines and saw action in the Gulf War. Iraq Conflict Persian Gulf War M60 The M60A1 tanks of the U.S. Marines saw action during Operation Desert Storm in 1991, opposing Iraqi armor which included the T-54/T-59, T-55, T-62, Type 69, and T-72. The M60A1s were fitted with add-on explosive reactive armor (ERA) packages and supported the drive into Kuwait City where they were involved in a two-day tank battle at the Kuwait airport with the loss of only one vehicle and no crew. They saw service with the United States Marine Corps, and the Saudi Arabian Army. M1 Abrams When the Abrams entered service in the 1980s, they operated alongside M60A3 within the United States military, and with other NATO tanks in numerous Cold War exercises. These exercises usually took place in Western Europe, especially West Germany, but also in some other countries like South Korea. During such training exercises, Abrams' crews honed their skills for use against Soviet soldiers, equipment and vehicles. However, by 1991 the USSR had collapsed and the Abrams had not been in any combat. The Abrams remained untested in combat until the Gulf War in 1991. A total of 1,848 M1A1s were deployed to Saudi Arabia. The M1A1 was superior to Iraq's Soviet-era T-55 and T-62 tanks, as well as Iraqi assembled Russian T-72s, and locally produced copies (Asad Babil tank). The T-72s, like most Soviet export designs, lacked night vision systems and then-modern rangefinders, though they did have some night fighting tanks with older active infrared systems or floodlights—just not the latest starlight scopes and passive infrared scopes as on the Abrams. Only 23 M1A1s were taken out of service in the Gulf and one of these losses resulted in crew deaths from Iraqi fire. Some others took minor combat damage, with little effect on their operational readiness. Very few Abrams tanks were hit by enemy fire, and there was only one fatality, along with a handful of wounded as a result.