Hostile Culture - CAPA Engineer Cook Medical Inc Employee Review

I was hired to work at Cook medical in early April 2018 as a Contract CAPA Engineer. The 1st day on the job I got an uneasy feeling from one of the Administrators of the company but I thought that was his personality. The next couple of days as I worked to understand Cooks Quality system. I notice small signals: people where going to meetings that I was not invited to, the director (my boss) of the CAPA section was interviewing people for a CAPA position after I was on the job for 2 days, the almost lethargic attitude people took to answering my question. Before the end of the second week on the job my recruiter called and told me that my boss did not want me to come back. I was not given a reason why and my recruiter asked me what happened. I could not for the life of me think what I did wrong. I did not argue with anyone, did not violate any of their policies (internet, security, or worktime). I guess they were shock to see an educated African American male with an Engineering degree. I was the only African American male at that company location that was not working in shipping or on the production Floor.