Iran has unveiled its first drone-carrier warship, a vessel the country claims can operate far from its shores, The Associated Press reported on Thursday, citing Iran’s official IRNA news agency.

The unveiling of the underground “missile city,” as Iran terms these types of bases, is not new. Iran has unveiled them in the past and emphasized different capacities for these underground facilities. Iran’s goal is to show it can keep a lot of its forces underground in case of an attack by adversaries.