The U.S. and South Korea’s large-scale Ulchi Freedom Shield (UFS) military exercises drew to a close on Thursday, following a second week of field training that included artillery firing drills on responding to North Korean attack.

The UFS kicked off on Aug. 21, and the second half of the exercises that started earlier this week consisted of five days of large-scale outdoor mobility training in the inter-Korean border areas of Pocheon and Cheorwon, according to a press release from the ROK army.

Some 1,600 soldiers and 450 tracked and wheeled vehicles, including artillery equipment such as K1A2 tanks and K9A1