Edit Jandrese, sorry not an actual reply too your comment. Typo's.
Why does it matter how many firearms he owns? He is American (presumably) and initialized to self protection. He may be a member of the NRA. I don't know, I'm not a NRA member. Although, I thought American's are allowed tanks, howitzers, 88 flak guns and the sort as a constitutional right. So why mention his arsenal. Seems like muck throwing. If he had any weapons on him at the time of arrest it would of been mentioned.
He was hired through the advertising agency Saatchi & Saatchi. 6,500 employees world wide, (not including contacted workers) 145 offices. They can't be blamed for hiring him. Any libel slandering of the agency will be referred too their lawyers Shyster, FlyWheel and Shyster.
The funniest part of the debacle is the irony.