THE LATEST ABRAMS TANK ON THE RANGE: A new M1A2 SEPV3 Abrams Main Battle Tank sends a first round down range. The tank belongs to the U.S. Army’s 3rd Battalion, 8th Cavalry Regiment, 3rd Armored Brigade Combat Team, 1st Cavalry Division. The caption says the Greywolf Brigade is preparing to “zero” the main guns on its new tanks. Photo take August 18, 2020 at Fort Hood, Texas. This article from 2017 provides background information on the SEP3 (System Enhancement Package) program. The article also mentions the Lima, Ohio tank manufacturing facility:

There was never any doubt that the Lima (Ohio) plant will eventually be needed because the army is planning to maintain its M1 tank fleet (some 7,000 of them) into the 2030s. The M1 has already been in service since the 1980s and may become the first MBT (main battle tank) design to stay in service for half a century. Technically, some World War II tanks achieved that dubious goal but not in the service of a major power.

Worth the read.