A U.S. military aircraft with migrants being deported as part of President Donald Trump’s crackdown on illegal immigration landed in Guatemala on Monday, two U.S. officials told Reuters. The flight was a sign that Trump was undeterred in forging ahead with his program of using U.

The Trump administration began sending deportees on US military planes back to Guatemala and El Salvador, according to people familiar with the matter, as it looks to demonstrate that it’s acting on campaign promises to return millions of migrants to their home countries.

The Trump administration has enlisted the U.S. military to quickly scale up its deportation capacity, which usually relies on charter flights