The U.S. and U.K. militaries have carried out a series of strikes against Houthi targets, hours after they carried out their 27th attack against commercial vessels in Middle Eastern waterways.

These strikes “targeted the Houthis’ unmanned aerial vehicle, uncrewed surface vessel, land-attack cruise missile, and costal radar and air surveillance capabilities,” Secretary of Defense Lloyd Austin, who remains hospitalized, said in a statement. “This action is intended to disrupt and degrade the Houthis’ capabilities to endanger mariners and threaten global trade in one of world’s most critical waterways.”