South Korea’s foreign ministry said Sunday that it had donated two million medical face masks to the U.S. to help fill shortages in hospitals hit hardest by the coronavirus.

A press release from the agency obtained by Yonhap News Agency confirmed that a cargo plane carrying the masks would arrive in the U.S. on Monday.

“The provision followed comprehensive considerations, such as our country’s domestic COVID-19 situation and the local supply and demand for masks, and the need for support for our ally, the U.S.,” the ministry said, according to Yonhap.

“We hope that South Korea and the U.S. will quickly overcome the shared challenge of the COVID-19 disease through this support, and this can contribute to sharing Korea’s quarantine experience with the international community,” the press release continued.

Harry Harris, the U.S. ambassador to South Korea, thanked South Korea’s government in a pair of tweets.

A BIG thank you to ROK and @TheBlueHouseKR for providing 2 million face masks to @fema. Our alliance and friendship are as vital and ironclad today as it was 70 years ago. #ThankYouROK #WeAreInThisTogether pic.twitter.com/ECdBEKeMaO

— Harry Harris (@USAmbROK) May 10, 2020

미국 연방재난관리청 @fema에 마스크 200만 장을 긴급 지원해 준 청와대 @TheBlueHouseKR에 대단히 감사드립니다. 우리의 동맹과 우정은 70년 전만큼 중요하고 굳건합니다. #ThankYouROK #WeAreInThisTogether pic.twitter.com/T7gVG2iRwQ

— Harry Harris (@USAmbROK) May 10, 2020

The donation of masks marks the second major act of assistance South Korea’s government has taken amid the coronavirus outbreak; Maryland’s governor previously announced in April that his state had acquired half a million COVID-19 testing kits from the country.