There’s all kinds of economic, historical, demographic, and even national security reasons why CT is home to a lot of manufacturing to this day.

Between Pratt/UTC/EB/Sikorsky/Raytheon, CT has continuously won contracting bids from the US gov & military industrial complex.

Some of the strongest industry/manufacturing skilled laborers per capita reside in CT.

CT also harbors centralized access to shipyards, NYC, Boston, & DC. Which is to say that recruiting/retention of employees is easy, and that deployment of newly manufactured equipment is relatively easy as well.

This is all while CT is basically home to critical military infrastructure that’s juuuuust out of range from the most likely attack targets on US soil (in the Northeast at least)