Retired John Hannigan Posted by Who's Who Site Administrator on September 10, 2018 Most Recent Title: Retired Company: Raytheon Co. Industry: Retired Years in Industry: 55 Years affiliated with Marquis Who’s Who: 16 Contact John Hannigan: Name(required) Email(required) Website Comment(required) Submit Δ Share this:TwitterFacebookLinkedInLike this:Like Loading...