This is the best summary I could come up with:

SEOUL, South Korea (AP) — South Korean and U.S. troops have been conducting live-fire exercises this week to hone their ability to respond to potential “Hamas-style surprise artillery attacks” by North Korea, South Korea’s military said Friday.

The two forces regularly conduct live-fire and other training, but this week’s drills come after Hamas’ Oct. 7 assault on Israel raised security jitters in South Korea, which shares the world’s most heavily fortified border with rival North Korea.

Experts say the North’s forward-deployed long-range artillery guns can fire about 16,000 rounds per hour in the event of a conflict, posing a serious threat to Seoul, which is about 40-50 kilometers (25-30 miles) from the border.

The three-day firing exercises, which began Wednesday, involved 5,400 South Korean and U.S. soldiers, 300 artillery systems, 1,000 vehicles and air force assets, according to South Korea’s military.

In a simulated response to “the enemy’s (possible) Hamas-style surprise artillery attacks,” the exercises practiced strikes designed to “remove the origins of the enemy’s long-range artillery provocations at an early date,” South Korea’s Ground Operations Command said in a statement.

It typically views major U.S.-South Korean military training as invasion rehearsals and responds with missile tests.

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