Barnes had warned Lockwood & Co. about his hunch of conspiracy he had been noticing. Although, he had been irritated by the team, especially by George Cubbins, he showed genuine concern. He had observed that somehow Fittes and every department/corporation who benefited from the Problem had been eliminating small agencies by absorbing them, or tearing them through grim methods. Also, Barnes admitted that even DEPRAC had been infested over the years with too many Fittes people that he himself, the leader of DEPRAC, had lost control over the department.
When Lockwood & Co., from inadvertently to deliberately, confronted Penelope Fittes, Barnes was asked by Flo Bones to aid the team. Barnes had but came when the action was finished. He at least helped in clearing up the mess - confirming that Lockwood & Co. are in the good side and Penelope wasn't, capturing the people involved, and preparing how to carefully deliver a controlled news to the public to avoid unrest.
Barnes had underestimated Lockwood & Co. several times but he was somehow not surprised in every success the team had  He considered the public's reaction and the state of the government when a revelation was unveiled by Lockwood's team; after which, he would ask Lockwood to keep the truths for themselves at least for the moment.