A resident of a veterans home in California’s wine country says more than a dozen armed troops have marched into the building where a gunman is holding three people hostage.

Brian Goder had been locked down in the main dining room of the Veterans Home of California-Yountville for hours.

Authorities say they’re trying to negotiate with the gunman whose hostages are employees of the Pathway Home, a privately run program on the veterans home’s grounds. The program treats veterans of the Iraq and Afghanistan wars with post-traumatic stress disorder.

Goder says the program treats veterans who “have more troubles than others.”

He posted videos on Facebook of the troops in fatigues marching into the building around 3 p.m. It wasn’t clear what agency they were from.