Above is a YouTube video, talking about the pier that is expected to be built to bring supplies into Gaza as announced in the President’s State of the Union address.
Reportedly this will not involve putting US “boots on the ground” in Gaza, but…the Coast Guard may be involved in providing waterside security, states-side load out, and perhaps in the processing of shipments through Cyprus.
The War Zone discusses the risks of the operation here, “This Is How The U.S. Could Set Up a Gaza Beachhead, But Not Without Risks.”
A US Army logistics ship is already on the way.
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U.S. Army Vessel General Frank S. Besson (LSV-1) from the 7th Transportation Brigade (Expeditionary), 3rd Expeditionary Sustainment Command, XVIII Airborne Corps, departed Joint Base Langley-Eustis, Va., March 9, 2024, en route to the Eastern Mediterranean carrying the first equipment to establish a temporary pier to deliver vital humanitarian supplies. (U.S. Central Command photo)
Meanwhile, World Central Kitchens is working on its own possible solution. It is not unlikely other non-government organizations will want to bring in supplies as well. Presumably these supplies will also have to be processed through Cyprus where the Israelis have set up a check point.
Chuck Hill's CG Blog 
this will be a medium sized JLOTS operation mostly run by the US Army, but the Navy may contribute some small craft in the form of landing craft and MESF patrol boats.
They are going to want to make this look as little like an invasion as possible. That may be one reason to use Coast Guard for waterside security instead of boats painted gray.
Four more ships deploy to build Gaza humanitarian aid port (armytimes.com)