At the beginning of the 21st century, the Army's modernization was in full swing. Some of these new advances in technology and war fighting included the fielding of the M1A2 Abrams Main Battle Tank, the M2A2 Operation Desert Storm (ODS) Bradley Infantry Fighting Vehicle, the M109A6 Paladin howitzer, the OH-58D Kiowa Warrior, the AH-64D Apache Longbow Helicopter, and the M6 Bradley Linebacker.