Peter V. Neffenger’s official 2016 House witness biography lists him as Deputy National Incident Commander for the Deepwater Horizon oil spill. Later institutional bios (Harvard NPLI; CNA) repeat the same assignment and call the 2010 BP Gulf spill the largest and most complex in U.S. history. That is a documented Coast Guard role. It is not a finding about later TSA lines or later private-sector work.
The same House bio traces a Coast Guard career that began with Officer Candidate School (the House text says 1982; some later bios say 1981). It lists later tours as Deputy Commandant for Operations and, from May 2014, the 29th Vice Commandant. Those ranks are identity. They are not an argument that a spill-response job proves or disproves anything about 2020 election systems.
No primary source located for this draft invents a quote from Neffenger about Deepwater Horizon. None is invented here.