Decker is the true power in the Hub, and little happens there that he is not aware of. He seeks to control the entire water distribution business. He is wary of threats to his position, including the Children of the Cathedral, whose attractive preaching and aggressive expansion endanger his operations. Likewise, he also looks for a way to control the Hub police, whose head, Justin Greene, is less corruptible than his father.
He also presides over the Friendly Lending Company, a loanshark operation managed by Lorenzo Giovanni, which was recently accused by the Hub police of extortion.
Take down Decker: At any time during or after the above quests, he can be reported to Sheriff Greene. The player character will be asked to assist in taking him down; as expected, neither Decker nor Kane will be too pleased.
Sometime before 2161, Decker captured an initiate of the Brotherhood of Steel who was visiting the Hub and held him as a prisoner in Old Town, torturing him to get information on the Brotherhood of Steel. The player character can rescue the initiate as part of the Rescue Initiate from the Hub quest given by the Brotherhood.
Decker's death is the knell of the Underground. His absolutist control of all criminal activities within the city results in a lack of a successor. With no one to succeed him, the Hub police can subsequently eliminate any criminal elements without fear of retribution.