Biden also told the US military instructors that Islamic State militants don't pose an existential threat to the United States.
The vice president arrived in Jordan earlier today. In the capital of Amman, he met with King Abdullah II, a key Western military ally.
Washington has scaled up military aid to Jordan in recent months in line with the kingdom's central role in the fight against IS, which controls large areas of neighboring Syria and Iraq.
They viewed a flyover that included two F-16s and eight helicopters, among them Blackhawks and Cobras.
Biden then addressed US troops at a separate event in a mess hall in the compound.
"We are going to defeat ISIL," Biden told the soldiers, referring to the group by one of its acronyms.
"They are already on their heels," he said of the extremists. "It's going to take a long time, going to take a long time. They are no existential threat to the United States because we've got you and the people you are training (and) the finest military tactics in the world."
Jordan is Biden's last stop on a Mideast swing that also included the United Arab Emirates, Israel and the Palestinian territories.
