That makes it almost certain he worked alongside the US military. He absolutely would have been vetted prior to entry.
https://www.dhs.gov/archive/operation-allies-welcome
Operation Allies Welcome
On August 29, 2021, President Biden directed the Department of Homeland Security (DHS) to lead and coordinate ongoing efforts across the federal government to support vulnerable Afghans, including those who worked alongside us in Afghanistan for the past two decades, as they safely resettle in the United States. At the Presidents direction, the Secretary of Homeland Security is working with representatives from across the government to coordinate our response and ensure unity of effort.
To lead the effort in support of Operation Allies Welcome, DHS established a Unified Coordination Group (UCG). The UCG reports directly to the Secretary of Homeland Security and coordinates the implementation of a broad range of services, including initial processing, COVID-19 testing, isolation of COVID-positive individuals, vaccinations, additional medical services, and screening and support for individuals who are neither U.S. citizens nor lawful permanent residents. This support includes initial processing at pre-designated U.S. military bases prior to being connected with non-governmental organizations for resettlement into communities. The work of the UCG is undertaken in close collaboration with partners in state and local government, non-governmental organizations, and the private sector.
I'd be willing to bet he had an issue with the Trump administrations treatment of Afghans.