Good point, if he was so dangerous, cnn camera man would be in danger, he went on to say, he doesn't own a firearm.
https://www.youtube.com/watch?v=EuAOcLZrQT4&feature=youtu.be
EDIT: rcvd the following from a friend who is a retired FBI agent.
My retired work associates think the arrest was over the top, unnecessary, and increased the risk of danger to Stone, the FBI Agents, and the people in his neighborhood. All those “assault weapons” loaded and being handled substantially increased the risk of someone getting shot. The FBI had thousands, if not tens of thousands of rounds on scene. Why necessary? Stone had a history of responding to Mueller for interviews and GJ testimony. There was no evidence in Stone’s house that might be destroyed. It was unnecessary and I wonder who in their right mind approved that arrest plan. Since it was a SWAT deployment, the SAC or ASAC was required to be on-scene. Who is running the FBI?