In another major aerospace company we encountered many issues created by disgruntled workers particularly around contract negotiation time.
These included things like cut wires, missing or incompatible fasteners, surface contamination on areas requiring painting. etc. I know of at least two cases where we called the FBI to investigate the damage because the employees were intentionally messing with GFE military assets.
That sort of retaliation could result in the deaths of 100s of people. Any employee who does that would be charged with murder.
Is this plant union?