Three radar sites on the Yemeni coast were destroyed by the U.S. military early Wednesday morning local time, in retaliation for missile launches against an American destroyer.

According to a statement by Pentagon press secretary Peter Cook, the sites were in Houthi-controlled territory on Yemen’s Red Sea coast. “Initial assessments show the sites were destroyed,” he said.

“The strikes — authorized by President Obama at the recommendation of Secretary of Defense Ash Carter and Chairman of the Joint Chiefs General Joseph Dunford — targeted radar sites involved in the recent missile launches threatening USS Mason and other vessels operating in international waters in the Red Sea and the Bab al-Mandeb.”

The USS Mason was targeted by a missile on Wednesday and by two missiles on Oct. 9. No injuries or damage to the vessel have been reported.

“The United States will respond to any further threat to our ships and commercial traffic, as appropriate,” Cook stated, “and will continue to maintain our freedom of navigation in the Red Sea.

Get The Brief. Sign up to receive the top stories you need to know right now. Please enter a valid email address. Sign Up Now Check the box if you do not wish to receive promotional offers via email from TIME. You can unsubscribe at any time. By signing up you are agreeing to our Terms of Use and Privacy Policy . This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. Thank you! For your security, we've sent a confirmation email to the address you entered. Click the link to confirm your subscription and begin receiving our newsletters. If you don't get the confirmation within 10 minutes, please check your spam folder.

Contact us at letters@time.com.