General Dynamics Land Systems bought Chrysler Defense in 1982. The plant became the sole US tank factory in when the Detroit Arsenal Tank Plant closed in 1996.
The deep sequestration budget cuts nearly shuttered the plant in 2012, and tank production languished under the Obama administration, which oversaw counter-insurgency wars in Iraq and Afghanistan, where a large force of tanks wasn't needed.
In 2017, the Joint Systems Manufacturing Center was producing about one upgraded M-1 tank a month; a year later it was producing about 11, according to the Los Angeles Times.
Two factors have seen the Lima's tank plant roar back to life: Trump's massive defense-spending hikes and the US's assessment that rivalries with China and Russia are now the country's foremost threat.
Deterring a major power like them may rely on the US Army fielding the upgraded, 80-ton Abrams tanks now rolling off Lima's assembly lines.