Donald Trump joked that a Mexican airplane was about to attack his rally on Thursday in Manchester, New Hampshire.
Trump was speaking about the damage done to America's economy by the North American Free Trade Agreement and jobs going from America to Mexico.
"Mexico, and I respect Mexico, I respect their leaders, what they've done to us is incredible. Their leaders are so much smarter, so much sharper, and it's incredible," Trump said.
At that point, a plane could be heard flying nearby.
"In fact, that could be a Mexican plane up there. They're getting ready to attack."
Trump then went back to talking about how a factory behind him had suffered because of Bill and Hillary Clinton.
"So, that's the way it is folks. I just want to say that this is a factory and the legacy really of Hillary Clinton and Bill Clinton, because this legacy is largely due and you could actually say entirely due to NAFTA."
Bill Clinton signed the final NAFTA agreement for the United States. Hillary Clinton was strongly in favor of NAFTA, but changed her position when she first ran for president in 2008. Sen. Bernie Sanders (I., Vt.) criticized Clinton on the issue during the 2016 Democratic primary.