Likely because a US warship has been flooded by the Houthis.

— "In continuation of our approach to resisting the occupation, in support of our people in Gaza, and in response to the massacres committed by the usurping entity against Palestinian civilians, including children, women and the elderly, the Mujahideen of the Islamic Resistance in Iraq, using appropriate weapons, attacked, at dawn today, Friday, a Zionist military target in our occupied territories, near  Jordan River Park.  The Islamic Resistance confirms that it will continue to destroy enemy strongholds, and we promise you more," their letter of confession stated