The Bosun's Shield Regenerator is an enemy in Borderlands: The Pre-Sequel
Locations
Suspension Bridge - Pity's Fall
Related missions
Intelligences of the Artificial Persuasion
Strategy Guide
These Generators can't defend themselves. the Bosun will be taking care of most of that for them. There are also a number of Scavs helping as well. These are powering the Bosun's shield. Any damage before all 4 are destroyed and it will be repaired in mere seconds.