I was recently terminated after 15 years of employment with Verizon. I had a flawless record as an associate for 15 years

I had numerous customer and Verizon management commendations. I was terminated for what Verizon security states was a violation of their code of conduct. My supervisor teammates were doing exactly what I was doing. We did what our manager required us to do. I have numerous taped records as well as emails authorizing us and approving what we were doing. We were told if we did not meet his standards we would be placed on an improvement plan (PIP), in Veriozn being on a PIP is cause for discharge after 30 days if improvement has not been met. During this time their was word of a reduction in force so we all feared for losing our jobs. I was terminated but my teammates were not. Do I have any basis for recourse?