The Pentagon is putting together plans for weeks of ground operations in Iran as U.S. forces amass in the region, the Washington Post reported.

Citing multiple U.S. officials, the Post report suggested ground operations could involve both conventional infantry and special operations elements, but would not yet rise to the level of a full-scale invasion.

Decisions on whether or not to green light operations, which would put U.S. troops at substantially more risk to Iranian threats, now rest with President Donald Trump.

The Post’s report comes as U.S. military assets continue to flood the region. On Friday, U.S. Marines and sailors assigned to the Tripoli Amphibious Ready Group arrived in U.S. Central Command waters.

The group, which is led by the America-class amphibious assault ship USS Tripoli and includes the embarked 31st Marine Expeditionary Unit, departed earlier this month from its homeport of Sasebo, Japan.

The Pentagon has also confirmed elements from the 82nd Airborne Division headquarters and a brigade combat team are slated to deploy to the Middle East. Based out of Fort Bragg, North Carolina, the 82nd acts as the Army’s rapid-response force and is often among the first units sent to respond to emerging crises.

The report also comes on the heels of an Iranian missile and drone attack on Friday that injured a dozen U.S. service members at Prince Sultan Airbase in Saudi Arabia. Two of the 12 injuries are considered to be serious.

The strike also reportedly damaged multiple U.S. aircraft, including an E-3 Sentry AWACS and multiple KC-135 tankers.

Thirteen service members have been killed in action and nearly 300 wounded during Operation Epic Fury, a joint undertaking by U.S. and Israeli militaries against the Islamic Republic that began on Feb. 28.

The majority of the wounded have since returned to duty, according to U.S. Central Command.

Prior to Friday’s attack, 10 U.S. troops remained in serious condition.