WASHINGTON (AP) — In the coming days, the U.S. military in the eastern Mediterranean is expected to jab one end of a hulking metal dock — the length of five U.S. football fields — into a beach in northern Gaza.

And that may be the end of the easy part for the Biden administration’s two-month-long, $320 million effort to open a sea route to get humanitarian aid into Gaza, with dangers and uncertainties ahead for aid delivery teams as fighting surges and the plight of starving Palestinians grows more dire.

For President Joe Biden, the Pentagon’s new floating pier and causeway are a gamble, an attempted workaround to the challenges of getting aid into Gaza from intensifying war and the restrictions its ally Israel has placed at land crossings since Hamas’ deadly attacks on Israel launched the conflict in October.

Maj. Gen. Pat Ryder, the Pentagon press secretary, said Tuesday that humanitarian groups were ready for the first shipments through the U.S. maritime route. “In the coming days, you can expect to see this effort underway. And we are confident that that we will be able to, working with our NGO partners, ensure that aid can be delivered,” he said.