What is the 'Max Thunder' exercise?

So what exactly is the 'Max Thunder' exercise that has made North Korea angry enough... not only to call off its high-level talks with the South... but to also make it reconsider its high-stakes summit in Singapore with President Trump?
Our Lee Seung-jae takes a closer look.
Last year's 'Max Thunder' exercise began on April 21st, 2017.
Back then, North Korea waited five days before responding with its largest ever live-fire exercise.
This year's 'Max Thunder' drill, which began last Friday,... and is scheduled to run for two weeks,... led to North Korea cancel a high-level inter-Korean meeting set for Wednesday,... and even threaten to pull the plug on the Pyongyang-Washington summit scheduled for June 12th in Singapore.
The joint-exercise takes place annually and is the largest military flying exercise held on the Korean Peninsula.
It's part of a continuous exercise program designed to enhance interoperability between South Korean and U.S. forces, and is not tied to any specific real-world events or situations.
It has also been regarded as an exercise that highlights the long-standing military partnership, commitment and enduring friendship between the two allies to help ensure peace and security in Northeast Asia.
So how is the 'Max Thunder' exercise being held this year?
The joint exercise, involves some 100 warplanes, including eight F-22 radar-evading fighters,... and an unspecified number of B-52 bombers and F-15K jets.
But the highlight of this year's exercise are the eight F-22 fighter jets that are making their debut.
Equipped with state-of-the-art stealth technology,... the 5th generation fighter jet,... is known be to capable of bringing down one hundred 4th generation fighters, like the F-15 and the F-16 on its own.
The main bay of the F-22 Raptor can accommodate six launchers for beyond-visual-range missiles and each side bay has launchers for short-range missiles.
If that isn't devastating enough,... four of the launchers can be replaced with two bomb racks that can each carry 1,000-pound bombs.
Could the sheer size of the exercise be the reason for North Korea's sudden about-face?
While 'Max Thunder' is known to be routine and defensive in nature,... both allies are now left hoping this year's exercise won't put a dampener on the path to peace.
Lee Seung-jae, Arirang News.