Developed primarily in the 1970s, the Army’s fleet of main battle tanks...
Approved for production in 1990, the M1A2 represents the U.S. Army’s technological improvement of the basic M1A1 design and the most modern battle tank in the world. Outwardly similar in appearance to the M1A1, the most notable exterior changes on the M1A2 are the redesigned Commander's Weapon Station (CWS) and the addition of a Commander's Independent Thermal Viewer) on the left side of the turret forward of the loader's hatch. Internally, however, the M1A2 has been radically redesigned to take advantage of newer technology.
http://www.military.com/equipment/m1a2-abrams-main-battle-tank- - - - - - - - -
The M1A2 SEP is builds on the digitized M1A2 platform with an improved armor package of third generation steel-encased depleted uranium armor, a new command and control system, second-generation FLIR thermal sights that include a Commander’s Independent Thermal Viewer (CITV) for “hunter-killer” operation, the Under Armor Auxiliary Power Unit (UAAPU) that lets crews run key electronics without running the engine, and a Thermal Management System (TMS – i.e. air conditioning for crew & electronics). The M1A2 SEP also features enhanced electronics like color maps and displays, improved networked communications, high-density computer memory and increased microprocessing speed, a more user friendly “Soldier Machine Interface (SMI)”, and an open operating computing system that will make future upgrades and additions easier.
The M1A2 SEP’s advanced FLIR/thermal sights are part of the US Army’s Horizontal Technology Integration (HTI) Second Generation Forward Looking Infrared (HTI SGF) sighting systems program, which creates commonality with other vehicles like the M2/M3 Bradley IFVs.
http://www.army-technology.com/projects/abrams/- - - - - - - - - - -
Anyone claiming our army is operating on 1970's technology is delusional or intentionally misleading.