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President Obama traveled down to MacDill Air Force Base in Florida to rally U.S. troops behind his battle plan for the Islamic State, and he more or less compared the world's only superpower to the Ghostbusters.

The president was in the process of explaining his decision to intervene militarily once again in Middle East, saying it occasionally "falls on our shoulders" because the U.S. remains the world's indispensable nation.

"When the world is threatened, when the world needs help, it calls on America," Obama said.

Even the countries that complain about America, when they need help, who do they call?"

The troops may have been tempted to call out the iconic line from the 1984 classic, but they resisted.

"They call on America," Obama continued, "and then America calls on you."

The president largely reiterated the key points from his address to the nation last week, emphasizing that the U.S. was acting in Iraq as part of a global coalition and that, as he has insisted repeatedly, he will not commit U.S. troops "to fighting another ground war in Iraq."

"This is not and will not be America's fight alone," Obama said.

I want to be clear. The American forces that have been deployed to Iraq do not and will not have a combat mission."

Earlier in the morning, Obama toured the facilities at the military's Central Command in Tampa and received a high-level briefing from Defense Department officials on plans for the war against ISIS.

Obama received the loudest ovation from the troops when he warned ISIS that the U.S. would do whatever it takes to find terrorists who have killed or threaten Americans.

We mean what we say, our reach is long; if you threaten America, you will find no safe haven. We will find you eventually."

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