Donald Trump joined Bill O'Reilly tonight to discuss the horrific shootings in Chattanooga, Tennessee. 

Four Marines were killed today when a gunman opened fire at two separate military centers.

A police officer was also wounded and suffered non-life threatening injuries. The suspected shooter has been ID'd as 24-year-old Muhammad Youssef Abdulazeez.

The names of the Marines who were reportedly shot were not immediately released pending notification of their families.

The 2016 GOP presidential candidate told O'Reilly that it's "ridiculous" that the Marines aren't allowed to carry guns at the centers.

"These are four great Marines ... and that they're not allowed to carry guns is absolutely ridiculous," Trump stated. 

Trump also stated that President Obama refuses to use the term "Islamic terrorism," but it's happening all over the world. 

"It's going to get worse in our country and we better start fighting a lot tougher than we're fighting right now Bill," he said. “If we’re going to fight elements that are causing tremendous problems ... at least we have to start maybe being not so politically correct.”

Trump asserted that the terror attacks will only get worse, because people don't respect the country or law enforcement officials. 

Watch Trump's full interview with O'Reilly in the video below.

UPDATES: 4 Marines Killed in Attacks on 2 Chattanooga Military Centers

Krauthammer on TN Shootings: 'Example of Radical Islam at Work'

Chattanooga Shooter Identified as Muhammad Youssef Abdulazeez